[Bug Fix] Fix Infinite Loop in Adventure::Finished() (#4473)

Fix infinite loop condition when bot encountered

world/adventure.cpp

@@ -287,6 +287,7 @@ void Adventure::Finished(AdventureWinStatus ws)
 		auto character_id = database.GetCharacterID(*iter);
 
 		if (character_id == 0) {
+			++iter;
 			continue;
 		}