Bug 413318. Fix broken canvas3d build. r=vlad, NPOTB

extensions/canvas3d/src/nsCanvasRenderingContextGL.h

@@ -361,7 +361,7 @@ public:
         ncc->SetReturnValueWasSet(PR_TRUE);
     }
 
-    nsAXPCNativeCallContext ncc;
+    nsAXPCNativeCallContext *ncc;
     nsresult error;
     JSContext *ctx;
     PRUint32 argc;