Backed out changeset ff971b92f74c

content/canvas/src/NativeJSContext.cpp

@@ -9,7 +9,7 @@ PRBool
 NativeJSContext::AddGCRoot(void *aPtr, const char *aName)
 {
   if (!sJSScriptRuntime) {
-    CallGetService("@mozilla.org/js/xpc/RuntimeService;1",
+    nsresult rv = CallGetService("@mozilla.org/js/xpc/RuntimeService;1",
                                  &sJSRuntimeService);
     NS_ENSURE_SUCCESS(rv, PR_FALSE);
     NS_ABORT_IF_FALSE(sJSRuntimeService, "CallGetService succeeded but returned a null pointer?");