preserve current path during fillRect() and strokeRect()

Signed-off-by: Tj Holowaychuk <tj@vision-media.ca>

src/CanvasRenderingContext2d.cc

@@ -1640,9 +1640,10 @@ Context2d::FillRect(const Arguments &args) {
   if (0 == width || 0 == height) return Undefined();
   Context2d *context = ObjectWrap::Unwrap<Context2d>(args.This());
   cairo_t *ctx = context->context();
-  cairo_new_path(ctx);
+  context->savePath();
   cairo_rectangle(ctx, x, y, width, height);
   context->fill();
+  context->restorePath();
   return Undefined();
 }
 
@@ -1657,9 +1658,10 @@ Context2d::StrokeRect(const Arguments &args) {
   if (0 == width && 0 == height) return Undefined();
   Context2d *context = ObjectWrap::Unwrap<Context2d>(args.This());
   cairo_t *ctx = context->context();
-  cairo_new_path(ctx);
+  context->savePath();
   cairo_rectangle(ctx, x, y, width, height);
   context->stroke();
+  context->restorePath();
   return Undefined();
 }