tree-wide: use coccinelle to patch a lot of code to use mfree()

This replaces this:

        free(p);
        p = NULL;

by this:

        p = mfree(p);

Change generated using coccinelle. Semantic patch is added to the
sources.

5 files changed, 8 insertions, 16 deletions

diff --git a/src/libsystemd/sd-bus/bus-creds.c b/src/libsystemd/sd-bus/bus-creds.c
index c3cc2b7212..99b9aa8084 100644
--- a/src/libsystemd/sd-bus/bus-creds.c
+++ b/src/libsystemd/sd-bus/bus-creds.c
@@ -107,8 +107,7 @@ _public_ sd_bus_creds *sd_bus_creds_unref(sd_bus_creds *c) {
                         free(c->cgroup_root);
                         free(c->description);
 
-                        free(c->supplementary_gids);
-                        c->supplementary_gids = NULL;
+                        c->supplementary_gids = mfree(c->supplementary_gids);
 
                         strv_free(c->well_known_names);
                         c->well_known_names = NULL;
@@ -1016,8 +1015,7 @@ int bus_creds_add_more(sd_bus_creds *c, uint64_t mask, pid_t pid, pid_t tid) {
                                 return r;
                 } else {
                         if (c->cmdline_size == 0) {
-                                free(c->cmdline);
-                                c->cmdline = NULL;
+                                c->cmdline = mfree(c->cmdline);
                         }
 
                         c->mask |= SD_BUS_CREDS_CMDLINE;
diff --git a/src/libsystemd/sd-bus/bus-message.c b/src/libsystemd/sd-bus/bus-message.c
index 366a026426..72e2b9f785 100644
--- a/src/libsystemd/sd-bus/bus-message.c
+++ b/src/libsystemd/sd-bus/bus-message.c
@@ -113,8 +113,7 @@ static void message_reset_containers(sd_bus_message *m) {
                 free(m->containers[i].offsets);
         }
 
-        free(m->containers);
-        m->containers = NULL;
+        m->containers = mfree(m->containers);
 
         m->n_containers = m->containers_allocated = 0;
         m->root_container.index = 0;
diff --git a/src/libsystemd/sd-bus/busctl-introspect.c b/src/libsystemd/sd-bus/busctl-introspect.c
index 03e83d08a1..abe482fc46 100644
--- a/src/libsystemd/sd-bus/busctl-introspect.c
+++ b/src/libsystemd/sd-bus/busctl-introspect.c
@@ -55,8 +55,7 @@ static void context_reset_member(Context *c) {
 }
 
 static void context_reset_interface(Context *c) {
-        free(c->interface_name);
-        c->interface_name = NULL;
+        c->interface_name = mfree(c->interface_name);
         c->interface_flags = 0;
 
         context_reset_member(c);
diff --git a/src/libsystemd/sd-bus/sd-bus.c b/src/libsystemd/sd-bus/sd-bus.c
index 4a9181613a..2ac4b9be8e 100644
--- a/src/libsystemd/sd-bus/sd-bus.c
+++ b/src/libsystemd/sd-bus/sd-bus.c
@@ -820,8 +820,7 @@ static int parse_container_unix_address(sd_bus *b, const char **p, char **guid)
                 b->machine = machine;
                 machine = NULL;
         } else {
-                free(b->machine);
-                b->machine = NULL;
+                b->machine = mfree(b->machine);
         }
 
         if (pid) {
@@ -880,8 +879,7 @@ static int parse_container_kernel_address(sd_bus *b, const char **p, char **guid
                 b->machine = machine;
                 machine = NULL;
         } else {
-                free(b->machine);
-                b->machine = NULL;
+                b->machine = mfree(b->machine);
         }
 
         if (pid) {
diff --git a/src/libsystemd/sd-netlink/netlink-message.c b/src/libsystemd/sd-netlink/netlink-message.c
index aee2ced2d9..e2a10ae2b4 100644
--- a/src/libsystemd/sd-netlink/netlink-message.c
+++ b/src/libsystemd/sd-netlink/netlink-message.c
@@ -843,8 +843,7 @@ int sd_netlink_message_exit_container(sd_netlink_message *m) {
         assert_return(m->sealed, -EINVAL);
         assert_return(m->n_containers > 0, -EINVAL);
 
-        free(m->containers[m->n_containers].attributes);
-        m->containers[m->n_containers].attributes = NULL;
+        m->containers[m->n_containers].attributes = mfree(m->containers[m->n_containers].attributes);
         m->containers[m->n_containers].type_system = NULL;
 
         m->n_containers --;
@@ -894,8 +893,7 @@ int sd_netlink_message_rewind(sd_netlink_message *m) {
                 rtnl_message_seal(m);
 
         for (i = 1; i <= m->n_containers; i++) {
-                free(m->containers[i].attributes);
-                m->containers[i].attributes = NULL;
+                m->containers[i].attributes = mfree(m->containers[i].attributes);
         }
 
         m->n_containers = 0;