tree-wide: make use of the fact that strv_free() returns NULL

Another Coccinelle patch.

4 files changed, 16 insertions, 35 deletions

diff --git a/src/core/dbus.c b/src/core/dbus.c
index 0a2180c6a7..dcaf7cc835 100644
--- a/src/core/dbus.c
+++ b/src/core/dbus.c
@@ -1059,8 +1059,7 @@ void bus_done(Manager *m) {
         m->private_buses = NULL;
 
         m->subscribed = sd_bus_track_unref(m->subscribed);
-        strv_free(m->deserialized_subscribed);
-        m->deserialized_subscribed = NULL;
+        m->deserialized_subscribed = strv_free(m->deserialized_subscribed);
 
         if (m->private_listen_event_source)
                 m->private_listen_event_source = sd_event_source_unref(m->private_listen_event_source);
@@ -1191,8 +1190,7 @@ int bus_track_coldplug(Manager *m, sd_bus_track **t, char ***l) {
                 }
         }
 
-        strv_free(*l);
-        *l = NULL;
+        *l = strv_free(*l);
 
         return r;
 }
diff --git a/src/core/execute.c b/src/core/execute.c
index 6abb0a5d5d..86c2a80673 100644
--- a/src/core/execute.c
+++ b/src/core/execute.c
@@ -1992,11 +1992,8 @@ void exec_context_done(ExecContext *c) {
 
         assert(c);
 
-        strv_free(c->environment);
-        c->environment = NULL;
-
-        strv_free(c->environment_files);
-        c->environment_files = NULL;
+        c->environment = strv_free(c->environment);
+        c->environment_files = strv_free(c->environment_files);
 
         for (l = 0; l < ELEMENTSOF(c->rlimit); l++)
                 c->rlimit[l] = mfree(c->rlimit[l]);
@@ -2008,8 +2005,7 @@ void exec_context_done(ExecContext *c) {
         c->user = mfree(c->user);
         c->group = mfree(c->group);
 
-        strv_free(c->supplementary_groups);
-        c->supplementary_groups = NULL;
+        c->supplementary_groups = strv_free(c->supplementary_groups);
 
         c->pam_name = mfree(c->pam_name);
 
@@ -2018,14 +2014,9 @@ void exec_context_done(ExecContext *c) {
                 c->capabilities = NULL;
         }
 
-        strv_free(c->read_only_dirs);
-        c->read_only_dirs = NULL;
-
-        strv_free(c->read_write_dirs);
-        c->read_write_dirs = NULL;
-
-        strv_free(c->inaccessible_dirs);
-        c->inaccessible_dirs = NULL;
+        c->read_only_dirs = strv_free(c->read_only_dirs);
+        c->read_write_dirs = strv_free(c->read_write_dirs);
+        c->inaccessible_dirs = strv_free(c->inaccessible_dirs);
 
         if (c->cpuset)
                 CPU_FREE(c->cpuset);
@@ -2043,8 +2034,7 @@ void exec_context_done(ExecContext *c) {
         set_free(c->address_families);
         c->address_families = NULL;
 
-        strv_free(c->runtime_directory);
-        c->runtime_directory = NULL;
+        c->runtime_directory = strv_free(c->runtime_directory);
 
         bus_endpoint_free(c->bus_endpoint);
         c->bus_endpoint = NULL;
@@ -2079,8 +2069,7 @@ void exec_command_done(ExecCommand *c) {
 
         c->path = mfree(c->path);
 
-        strv_free(c->argv);
-        c->argv = NULL;
+        c->argv = strv_free(c->argv);
 }
 
 void exec_command_done_array(ExecCommand *c, unsigned n) {
diff --git a/src/core/load-fragment.c b/src/core/load-fragment.c
index b695c57da8..79dd3075c9 100644
--- a/src/core/load-fragment.c
+++ b/src/core/load-fragment.c
@@ -1888,8 +1888,7 @@ int config_parse_unit_env_file(const char *unit,
 
         if (isempty(rvalue)) {
                 /* Empty assignment frees the list */
-                strv_free(*env);
-                *env = NULL;
+                *env = strv_free(*env);
                 return 0;
         }
 
@@ -1937,8 +1936,7 @@ int config_parse_environ(const char *unit,
 
         if (isempty(rvalue)) {
                 /* Empty assignment resets the list */
-                strv_free(*env);
-                *env = NULL;
+                *env = strv_free(*env);
                 return 0;
         }
 
@@ -2245,8 +2243,7 @@ int config_parse_documentation(const char *unit,
 
         if (isempty(rvalue)) {
                 /* Empty assignment resets the list */
-                strv_free(u->documentation);
-                u->documentation = NULL;
+                u->documentation = strv_free(u->documentation);
                 return 0;
         }
 
@@ -3011,8 +3008,7 @@ int config_parse_runtime_directory(
 
         if (isempty(rvalue)) {
                 /* Empty assignment resets the list */
-                strv_free(*rt);
-                *rt = NULL;
+                *rt = strv_free(*rt);
                 return 0;
         }
 
@@ -3140,8 +3136,7 @@ int config_parse_namespace_path_strv(
 
         if (isempty(rvalue)) {
                 /* Empty assignment resets the list */
-                strv_free(*sv);
-                *sv = NULL;
+                *sv = strv_free(*sv);
                 return 0;
         }
 
diff --git a/src/core/unit.c b/src/core/unit.c
index 24a6747b10..563d7bf254 100644
--- a/src/core/unit.c
+++ b/src/core/unit.c
@@ -445,8 +445,7 @@ static void unit_free_requires_mounts_for(Unit *u) {
                 }
         }
 
-        strv_free(u->requires_mounts_for);
-        u->requires_mounts_for = NULL;
+        u->requires_mounts_for = strv_free(u->requires_mounts_for);
 }
 
 static void unit_done(Unit *u) {