[gjs] coverage: fix a GCC warning

[Cosimo Cecchi <cosimoc src gnome org>]

commit 7de78277a92be1ba7f82092881b6c24ca48b37b1
Author: Cosimo Cecchi <cosimoc gnome org>
Date:   Wed Oct 21 09:15:41 2015 -0700

    coverage: fix a GCC warning

 gjs/coverage.cpp |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/gjs/coverage.cpp b/gjs/coverage.cpp
index 78dfa12..ffefcfc 100644
--- a/gjs/coverage.cpp
+++ b/gjs/coverage.cpp
@@ -1182,7 +1182,7 @@ gjs_write_cache_to_path(const char *path,
             g_assert(error != NULL);
             g_critical("Deleting %s failed because %s! You will need to "
                        "delete it manually before running the coverage "
-                       "mode again.");
+                       "mode again.", path, error->message);
             g_clear_error(&error);
         }