Balance save()/restore() calls in dont_clip_to_layer gm

Bug: skia:6516
Change-Id: Id09336def938f6e4da028807912494cdae5f3734
Reviewed-on: https://skia-review.googlesource.com/14190
Reviewed-by: Mike Klein <mtklein@chromium.org>
Commit-Queue: Matt Sarett <msarett@google.com>
diff --git a/gm/aaclip.cpp b/gm/aaclip.cpp
index 1431eb6..0c90f53 100644
--- a/gm/aaclip.cpp
+++ b/gm/aaclip.cpp
@@ -65,6 +65,7 @@
     canvas->saveLayer(rec);
     do_draw(canvas, r);
     canvas->restore();
+    canvas->restore();
 
     canvas->restore();  // red-layer
 }