Bug 633047 - fix condition for Win64 reftest. r=ehsan

layout/reftests/font-features/reftest.list

@@ -17,7 +17,7 @@ HTTP(..) != font-features-hlig.html font-features-ref.html
 
 # compare Turkish rendering with reference using ZWNJ to break the ligature
 # (also works via Pango)
-fails-if(/^Windows\x20NT\x206\.1/.test(http.oscpu)) HTTP(..) == font-features-turkish.html font-features-turkish-ref.html
+fails-if(d2d) HTTP(..) == font-features-turkish.html font-features-turkish-ref.html
 
 # compare Turkish rendering with explicitly disabled ligatures
 HTTP(..) == font-features-turkish.html font-features-noliga.html