tree-wide: drop NULL sentinel from strjoin

This makes strjoin and strjoina more similar and avoids the useless final
argument.

spatch -I . -I ./src -I ./src/basic -I ./src/basic -I ./src/shared -I ./src/shared -I ./src/network -I ./src/locale -I ./src/login -I ./src/journal -I ./src/journal -I ./src/timedate -I ./src/timesync -I ./src/nspawn -I ./src/resolve -I ./src/resolve -I ./src/systemd -I ./src/core -I ./src/core -I ./src/libudev -I ./src/udev -I ./src/udev/net -I ./src/udev -I ./src/libsystemd/sd-bus -I ./src/libsystemd/sd-event -I ./src/libsystemd/sd-login -I ./src/libsystemd/sd-netlink -I ./src/libsystemd/sd-network -I ./src/libsystemd/sd-hwdb -I ./src/libsystemd/sd-device -I ./src/libsystemd/sd-id128 -I ./src/libsystemd-network --sp-file coccinelle/strjoin.cocci --in-place $(git ls-files src/*.c)

git grep -e '\bstrjoin\b.*NULL' -l|xargs sed -i -r 's/strjoin\((.*), NULL\)/strjoin(\1)/'

This might have missed a few cases (spatch has a really hard time dealing
with _cleanup_ macros), but that's no big issue, they can always be fixed
later.

1 files changed, 5 insertions, 5 deletions

diff --git a/src/systemctl/systemctl.c b/src/systemctl/systemctl.c
index 129706d15f..2f20a250c2 100644
--- a/src/systemctl/systemctl.c
+++ b/src/systemctl/systemctl.c
@@ -518,7 +518,7 @@ static int output_units_list(const UnitInfo *unit_infos, unsigned c) {
                 }
 
                 if (u->machine) {
-                        j = strjoin(u->machine, ":", u->id, NULL);
+                        j = strjoin(u->machine, ":", u->id);
                         if (!j)
                                 return log_oom();
 
@@ -929,7 +929,7 @@ static int output_sockets_list(struct socket_info *socket_infos, unsigned cs) {
                         char **a;
 
                         if (s->machine) {
-                                j = strjoin(s->machine, ":", s->path, NULL);
+                                j = strjoin(s->machine, ":", s->path);
                                 if (!j)
                                         return log_oom();
                                 path = j;
@@ -1213,7 +1213,7 @@ static int output_timers_list(struct timer_info *timer_infos, unsigned n) {
                         format_timestamp_relative(trel2, sizeof(trel2), t->last_trigger);
 
                         if (t->machine) {
-                                j = strjoin(t->machine, ":", t->id, NULL);
+                                j = strjoin(t->machine, ":", t->id);
                                 if (!j)
                                         return log_oom();
                                 unit = j;
@@ -6418,12 +6418,12 @@ static int get_file_to_edit(
         assert(name);
         assert(ret_path);
 
-        path = strjoin(paths->persistent_config, "/", name, NULL);
+        path = strjoin(paths->persistent_config, "/", name);
         if (!path)
                 return log_oom();
 
         if (arg_runtime) {
-                run = strjoin(paths->runtime_config, "/", name, NULL);
+                run = strjoin(paths->runtime_config, "/", name);
                 if (!run)
                         return log_oom();
         }