[glib: 1/2] fuzzing: Fix test failure with G_DISABLE_ASSERT

[Simon McVittie <smcv src gnome org>]

commit b1315988fc19f68b319aa0de0f4ec8bb54ea0d32
Author: Philip Withnall <pwithnall endlessos org>
Date:   Tue Mar 8 11:52:30 2022 +0000

    fuzzing: Fix test failure with G_DISABLE_ASSERT
    
    https://gitlab.gnome.org/GNOME/glib/-/jobs/1875915
    ```
    ../fuzzing/fuzz_paths.c: In function ‘LLVMFuzzerTestOneInput’:
    ../fuzzing/fuzz_paths.c:7:16: error: variable ‘skipped_root’ set but not used 
[-Werror=unused-but-set-variable]
        7 |   const gchar *skipped_root;
          |                ^~~~~~~~~~~~
    cc1: all warnings being treated as errors
    ```
    
    Signed-off-by: Philip Withnall <pwithnall endlessos org>

 fuzzing/fuzz_paths.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/fuzzing/fuzz_paths.c b/fuzzing/fuzz_paths.c
index fbed84771..948159430 100644
--- a/fuzzing/fuzz_paths.c
+++ b/fuzzing/fuzz_paths.c
@@ -4,7 +4,7 @@ int
 LLVMFuzzerTestOneInput (const unsigned char *data, size_t size)
 {
   unsigned char *nul_terminated_data = NULL;
-  const gchar *skipped_root;
+  const gchar *skipped_root G_GNUC_UNUSED  /* when compiling with G_DISABLE_ASSERT */;
   gchar *basename = NULL, *dirname = NULL;
 
   fuzz_set_logging_func ();