Bug 1420218 - Fix copy/paste error. r=mstange

MozReview-Commit-ID: BVwciN6L8wq

--HG--
extra : rebase_source : a4d4ade504ee1d4dd9778a7d1528c6b62517225a

gfx/webrender_bindings/WebRenderTypes.h

@@ -744,7 +744,7 @@ struct WrClipId {
 struct WrStickyId {
   uint64_t id;
 
-  bool operator==(const WrClipId& other) const {
+  bool operator==(const WrStickyId& other) const {
     return id == other.id;
   }
 };