Move uiInterface.NotifyBlockTip signal above the core/wallet signal

- This will keep getbestblockhash more in sync with blocknotify callbacks

src/main.cpp

@@ -2606,6 +2606,10 @@ bool ActivateBestChain(CValidationState &state, const CChainParams& chainparams,
         // When we reach this point, we switched to a new tip (stored in pindexNewTip).
 
         // Notifications/callbacks that can run without cs_main
+        // Always notify the UI if a new block tip was connected
+        if (pindexFork != pindexNewTip) {
+            uiInterface.NotifyBlockTip(fInitialDownload, pindexNewTip);
+
             if (!fInitialDownload) {
                 // Find the hashes of all blocks that weren't previously in the best chain.
                 std::vector<uint256> vHashes;
@@ -2638,8 +2642,7 @@ bool ActivateBestChain(CValidationState &state, const CChainParams& chainparams,
                     GetMainSignals().UpdatedBlockTip(pindexNewTip);
                 }
             }
-        // Always notify the UI if a new block tip was connected
-        uiInterface.NotifyBlockTip(fInitialDownload, pindexNewTip);
+        }
     } while(pindexMostWork != chainActive.Tip());
     CheckBlockIndex(chainparams.GetConsensus());