Core/Misc: Fixed worldserver shutdown with --update-databases-only

src/server/worldserver/Main.cpp

@@ -257,6 +257,8 @@ extern int main(int argc, char** argv)
     for (int i = 0; i < numThreads; ++i)
         threadPool->PostWork([ioContext]() { ioContext->run(); });
 
+    std::shared_ptr<void> ioContextStopHandle(nullptr, [ioContext](void*) { ioContext->stop(); });
+
     // Set process priority according to configuration settings
     SetProcessPriority("server.worldserver", sConfigMgr->GetIntDefault(CONFIG_PROCESSOR_AFFINITY, 0), sConfigMgr->GetBoolDefault(CONFIG_HIGH_PRIORITY, false));
 
@@ -400,7 +402,7 @@ extern int main(int argc, char** argv)
     WorldPackets::Auth::ConnectTo::ShutdownEncryption();
     WorldPackets::Auth::EnterEncryptedMode::ShutdownEncryption();
 
-    ioContext->stop();
+    ioContextStopHandle.reset();
 
     threadPool.reset();