[gnome-control-center] info: Fix crash when application supports no mime-type

[Bastien Nocera <hadess src gnome org>]

commit d9f08df39cafbd1f15c510da444f8ac913cdc493
Author: Bastien Nocera <hadess hadess net>
Date:   Wed Feb 18 10:10:08 2015 +0100

    info: Fix crash when application supports no mime-type
    
    It seems to be possible for Firefox Nightly to set itself up as the
    default x-scheme-handler/http without actually handling any mime-types.
    
    See https://bugzilla.redhat.com/show_bug.cgi?id=1193680
    
    https://bugzilla.gnome.org/show_bug.cgi?id=744695

 panels/info/cc-info-panel.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/panels/info/cc-info-panel.c b/panels/info/cc-info-panel.c
index 86513a4..ad89d54 100644
--- a/panels/info/cc-info-panel.c
+++ b/panels/info/cc-info-panel.c
@@ -854,7 +854,7 @@ default_app_changed (GtkAppChooserButton *button,
       pattern = g_pattern_spec_new (app_data->extra_type_filter);
       mime_types = g_app_info_get_supported_types (info);
 
-      for (i = 0; mime_types[i]; i++)
+      for (i = 0; mime_types && mime_types[i]; i++)
         {
           if (!g_pattern_match_string (pattern, mime_types[i]))
             continue;