fix segfault on node 0.10.x

src/CanvasRenderingContext2d.cc

@@ -731,13 +731,13 @@ NAN_METHOD(Context2d::GetImageData) {
   int dstStride = sw * 4;
 
   uint8_t *src = canvas->data();
-  
+
 #if NODE_MAJOR_VERSION == 0 && NODE_MINOR_VERSION <= 10
   Local<Object> global = Context::GetCurrent()->Global();
 
   Local<Int32> sizeHandle = Nan::New(size);
   Local<Value> caargv[] = { sizeHandle };
-  Local<Object> clampedArray = global->Get(Nan::New("Uint8ClampedArray").ToLocalChecked()).As<Function>()->NewInstance(3, caargv);
+  Local<Object> clampedArray = global->Get(Nan::New("Uint8ClampedArray").ToLocalChecked()).As<Function>()->NewInstance(1, caargv);
 #else
   Local<ArrayBuffer> buffer = ArrayBuffer::New(Isolate::GetCurrent(), size);
   Local<Uint8ClampedArray> clampedArray = Uint8ClampedArray::New(buffer, 0, size);
@@ -745,7 +745,7 @@ NAN_METHOD(Context2d::GetImageData) {
 
   Nan::TypedArrayContents<uint8_t> typedArrayContents(clampedArray);
   uint8_t* dst = *typedArrayContents;
-  
+
   // Normalize data (argb -> rgba)
   for (int y = 0; y < sh; ++y) {
     uint32_t *row = (uint32_t *)(src + srcStride * (y + sy));
@@ -902,7 +902,7 @@ NAN_METHOD(Context2d::DrawImage) {
         dx - sx + (context->state->shadowOffsetX / fx) - pad + 1.4,
         dy - sy + (context->state->shadowOffsetY / fy) - pad + 1.4);
       cairo_paint(ctx);
-      
+
       // cleanup
       cairo_destroy(shadow_context);
       cairo_surface_destroy(shadow_surface);