[pango] [coretext] NULL check in ct_font_descriptor_get_weight()

[Cody Russell <bratsche src gnome org>]

commit c2a40e3b35a37f76f353655d9220dd94156fb89c
Author: Cody Russell <cody jhu edu>
Date:   Sun Sep 28 15:47:46 2014 -0500

    [coretext] NULL check in ct_font_descriptor_get_weight()
    
    Ensure that CFDictionaryGetValue() didn't return NULL before we
    call CFNumberGetValue().
    
    https://bugzilla.gnome.org/show_bug.cgi?id=736697

 pango/pangocoretext-fontmap.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/pango/pangocoretext-fontmap.c b/pango/pangocoretext-fontmap.c
index 6044773..9656fb8 100644
--- a/pango/pangocoretext-fontmap.c
+++ b/pango/pangocoretext-fontmap.c
@@ -298,7 +298,7 @@ ct_font_descriptor_get_weight (CTFontDescriptorRef desc)
   cf_number = (CFNumberRef)CFDictionaryGetValue (dict,
                                                  kCTFontWeightTrait);
 
-  if (CFNumberGetValue (cf_number, kCFNumberCGFloatType, &value))
+  if (cf_number != NULL && CFNumberGetValue (cf_number, kCFNumberCGFloatType, &value))
     {
       if (value < ct_weight_min || value > ct_weight_max)
        {