Fix research cancellation not registering in UI.

If cancelling a research, then the next completed research in the same facility would linger after completion.

Fixes ticket:3046.

src/multiplay.cpp

@@ -967,6 +967,7 @@ bool recvResearchStatus(NETQUEUE queue)
 		if (psBuilding)
 		{
 			cancelResearch(psBuilding, ModeImmediate);
+			popStatusPending(*(RESEARCH_FACILITY *)psBuilding->pFunctionality);  // Research cancellation is no longer pending, as it's actually cancelling now.
 		}
 	}