Bug 903732 - Stop leaking gfxPattern objects when using CSS text frames. r=dholbert

layout/svg/nsSVGTextFrame2.cpp

@@ -5481,10 +5481,12 @@ nsSVGTextFrame2::SetupInheritablePaint(gfxContext* aContext,
                                                         aFillOrStroke);
     aTargetPaint.SetColor(color);
 
-    aContext->SetPattern(new gfxPattern(gfxRGBA(NS_GET_R(color) / 255.0,
+    nsRefPtr<gfxPattern> pattern =
+      new gfxPattern(gfxRGBA(NS_GET_R(color) / 255.0,
                              NS_GET_G(color) / 255.0,
                              NS_GET_B(color) / 255.0,
-                                                NS_GET_A(color) / 255.0 * aOpacity)));
+                             NS_GET_A(color) / 255.0 * aOpacity));
+    aContext->SetPattern(pattern);
   }
 }