treewide: yet more log_*_errno + return simplifications

Using:
find . -name '*.[ch]' | while read f; do perl -i.mmm -e \
 'local $/;
  local $_=<>;
  s/(if\s*\([^\n]+\))\s*{\n(\s*)(log_[a-z_]*_errno\(\s*([->a-zA-Z_]+)\s*,[^;]+);\s*return\s+\g4;\s+}/\1\n\2return \3;/msg;
  print;'
 $f
done

And a couple of manual whitespace fixups.

1 files changed, 2 insertions, 4 deletions

diff --git a/src/shared/capability.c b/src/shared/capability.c
index 89e61430b0..b7e055318a 100644
--- a/src/shared/capability.c
+++ b/src/shared/capability.c
@@ -254,10 +254,8 @@ int drop_privileges(uid_t uid, gid_t gid, uint64_t keep_capabilities) {
         }
 
         r = capability_bounding_set_drop(~keep_capabilities, true);
-        if (r < 0) {
-                log_error_errno(r, "Failed to drop capabilities: %m");
-                return r;
-        }
+        if (r < 0)
+                return log_error_errno(r, "Failed to drop capabilities: %m");
 
         d = cap_init();
         if (!d)