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, 3 insertions, 3 deletions

diff --git a/src/locale/keymap-util.c b/src/locale/keymap-util.c
index a6bcd1ad54..da72bee4a9 100644
--- a/src/locale/keymap-util.c
+++ b/src/locale/keymap-util.c
@@ -519,7 +519,7 @@ int find_converted_keymap(const char *x11_layout, const char *x11_variant, char
         _cleanup_free_ char *n;
 
         if (x11_variant)
-                n = strjoin(x11_layout, "-", x11_variant, NULL);
+                n = strjoin(x11_layout, "-", x11_variant);
         else
                 n = strdup(x11_layout);
         if (!n)
@@ -529,8 +529,8 @@ int find_converted_keymap(const char *x11_layout, const char *x11_variant, char
                 _cleanup_free_ char *p = NULL, *pz = NULL;
                 bool uncompressed;
 
-                p = strjoin(dir, "xkb/", n, ".map", NULL);
-                pz = strjoin(dir, "xkb/", n, ".map.gz", NULL);
+                p = strjoin(dir, "xkb/", n, ".map");
+                pz = strjoin(dir, "xkb/", n, ".map.gz");
                 if (!p || !pz)
                         return -ENOMEM;