Bug 835446: Convert nsNavHistoryResultNode::mTransitionType to be uint32_t rather than int32_t, to fix build warning when passing it to nsTArray<uint32_t>::Contains(). r=mak

toolkit/components/places/nsNavHistoryResult.h

@@ -382,7 +382,7 @@ public:
   bool mHidden;
 
   // Transition type used when this node represents a single visit.
-  int32_t mTransitionType;
+  uint32_t mTransitionType;
 };
 
 NS_DEFINE_STATIC_IID_ACCESSOR(nsNavHistoryResultNode, NS_NAVHISTORYRESULTNODE_IID)