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.

3 files changed, 3 insertions, 3 deletions

diff --git a/src/login/logind-inhibit.c b/src/login/logind-inhibit.c
index c93b24009b..a7e5c01ef3 100644
--- a/src/login/logind-inhibit.c
+++ b/src/login/logind-inhibit.c
@@ -294,7 +294,7 @@ int inhibitor_create_fifo(Inhibitor *i) {
                 if (r < 0)
                         return r;
 
-                i->fifo_path = strjoin("/run/systemd/inhibit/", i->id, ".ref", NULL);
+                i->fifo_path = strjoin("/run/systemd/inhibit/", i->id, ".ref");
                 if (!i->fifo_path)
                         return -ENOMEM;
 
diff --git a/src/login/logind-session.c b/src/login/logind-session.c
index cbf035f706..e83c37a5ac 100644
--- a/src/login/logind-session.c
+++ b/src/login/logind-session.c
@@ -505,7 +505,7 @@ static int session_start_scope(Session *s) {
                 char *scope, *job = NULL;
                 const char *description;
 
-                scope = strjoin("session-", s->id, ".scope", NULL);
+                scope = strjoin("session-", s->id, ".scope");
                 if (!scope)
                         return log_oom();
 
diff --git a/src/login/pam_systemd.c b/src/login/pam_systemd.c
index 4f023640f6..b0f75b2a21 100644
--- a/src/login/pam_systemd.c
+++ b/src/login/pam_systemd.c
@@ -186,7 +186,7 @@ static int export_legacy_dbus_address(
          * daemons that spawn dbus-daemon, instead of forcing
          * DBUS_SESSION_BUS_ADDRESS= here. */
 
-        s = strjoin(runtime, "/bus", NULL);
+        s = strjoin(runtime, "/bus");
         if (!s)
                 goto error;