[glib] gio: Fix a GError memory leak in GDesktopAppInfo

[Philip Withnall <pwithnall src gnome org>]

commit 27660b178e7efd1b54b0d86b2e3ebd993d7781b1
Author: Philip Withnall <philip withnall collabora co uk>
Date:   Tue Mar 15 18:03:00 2016 +0000

    gio: Fix a GError memory leak in GDesktopAppInfo
    
    Spotted by Coverity (CID: #1352961).

 gio/gdesktopappinfo.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/gio/gdesktopappinfo.c b/gio/gdesktopappinfo.c
index cbfe556..ac9c7eb 100644
--- a/gio/gdesktopappinfo.c
+++ b/gio/gdesktopappinfo.c
@@ -3419,6 +3419,7 @@ run_update_command (char *command,
              * chance of debugging it.
              */
             g_warning ("%s", error->message);
+            g_error_free (error);
           }
 
         g_free (argv[1]);