coccinelle: make use of SYNTHETIC_ERRNO

Ideally, coccinelle would strip unnecessary braces too. But I do not see any
option in coccinelle for this, so instead, I edited the patch text using
search&replace to remove the braces. Unfortunately this is not fully automatic,
in particular it didn't deal well with if-else-if-else blocks and ifdefs, so
there is an increased likelikehood be some bugs in such spots.

I also removed part of the patch that coccinelle generated for udev, where we
returns -1 for failure. This should be fixed independently.

1 files changed, 2 insertions, 2 deletions

diff --git a/src/stdio-bridge/stdio-bridge.c b/src/stdio-bridge/stdio-bridge.c
index 9ceb3f8d13..3a21aa4aed 100644
--- a/src/stdio-bridge/stdio-bridge.c
+++ b/src/stdio-bridge/stdio-bridge.c
@@ -82,8 +82,8 @@ static int parse_argv(int argc, char *argv[]) {
 
                         break;
                 default:
-                        log_error("Unknown option code %c", c);
-                        return -EINVAL;
+                        return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
+                                               "Unknown option code %c", c);
                 }
         }