Core: WARN instead of INFO - this is actually something we'd want to be informed of...

(cherry picked from commit d5718f3372)

src/server/shared/Networking/SocketMgr.h

@@ -100,7 +100,7 @@ public:
         }
         catch (boost::system::system_error const& err)
         {
-            TC_LOG_INFO("network", "Failed to retrieve client's remote address %s", err.what());
+            TC_LOG_WARN("network", "Failed to retrieve client's remote address %s", err.what());
         }
     }