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.

2 files changed, 2 insertions, 2 deletions

diff --git a/src/import/import-raw.c b/src/import/import-raw.c
index 29f3f896e5..808eae38f8 100644
--- a/src/import/import-raw.c
+++ b/src/import/import-raw.c
@@ -267,7 +267,7 @@ static int raw_import_open_disk(RawImport *i) {
         assert(!i->temp_path);
         assert(i->output_fd < 0);
 
-        i->final_path = strjoin(i->image_root, "/", i->local, ".raw", NULL);
+        i->final_path = strjoin(i->image_root, "/", i->local, ".raw");
         if (!i->final_path)
                 return log_oom();
 
diff --git a/src/import/import-tar.c b/src/import/import-tar.c
index 22f9b8c5ea..1c229ec82f 100644
--- a/src/import/import-tar.c
+++ b/src/import/import-tar.c
@@ -222,7 +222,7 @@ static int tar_import_fork_tar(TarImport *i) {
         assert(!i->temp_path);
         assert(i->tar_fd < 0);
 
-        i->final_path = strjoin(i->image_root, "/", i->local, NULL);
+        i->final_path = strjoin(i->image_root, "/", i->local);
         if (!i->final_path)
                 return log_oom();