test: return error code

The test misses to return an error code. Thus propagate the error
if config_dump() fails.

Signed-off-by: Daniel Wagner <dwagner@suse.de>

test/config/config-dump.c

@@ -44,9 +44,9 @@ static bool config_dump(const char *file)
 
 int main(int argc, char *argv[])
 {
-	bool pass = true;
+	bool pass;
 
-	config_dump(argv[1]);
+	pass = config_dump(argv[1]);
 	fflush(stdout);
 
 	exit(pass ? EXIT_SUCCESS : EXIT_FAILURE);