Only return a valid RotatedBuffer in ContentClientBasic::CreateBuffer (bug 1416790, r=dvander)

MozReview-Commit-ID: C5l4OHAWBLL
2017-11-13 12:52:31 -05:00
parent ba6615b484
commit acaa8efb33
1 changed files with 4 additions and 0 deletions
--- a/gfx/layers/client/ContentClient.cpp
+++ b/gfx/layers/client/ContentClient.cpp
@@ -616,6 +616,10 @@ ContentClientBasic::CreateBuffer(gfxContentType aType,
      gfxPlatform::GetPlatform()->Optimal2DFormatForContent(aType));
  }

+  if (!drawTarget) {
+    return nullptr;
+  }
+
  return new DrawTargetRotatedBuffer(drawTarget, nullptr, aRect, IntPoint(0,0));
 }