Include both option name & argument in invalid argument errors

Found by gcc 14.1:
x11perf.c: In function ‘invalid_arg’:
x11perf.c:339:21: warning: too many arguments for format [-Wformat-extra-args]
  339 |     fprintf(stderr, "Error: invalid argument to %s\n", arg, option);
      |                     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Fixes: e7a6545 ("When users give invalid arguments, tell them what they did wrong")
Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>
Part-of: <https://gitlab.freedesktop.org/xorg/test/x11perf/-/merge_requests/11>

1 files changed, 1 insertions, 1 deletions

diff --git a/x11perf.c b/x11perf.c
index eacea0d..e20de88 100644
--- a/x11perf.c
+++ b/x11perf.c
@@ -336,7 +336,7 @@ missing_arg(const char *option)
 _X_NORETURN _X_COLD static void
 invalid_arg( const char *arg, const char *option)
 {
-    fprintf(stderr, "Error: invalid argument to %s\n", arg, option);
+    fprintf(stderr, "Error: invalid argument '%s' to %s\n", arg, option);
     usage(USAGE_OPTIONS, EXIT_FAILURE);
 }