Core/Misc: Properly close database connections when using --update-databases-only arg

(cherry picked from commit a9f9f737b2)

src/server/bnetserver/Main.cpp

@@ -157,6 +157,8 @@ int main(int argc, char** argv)
     if (!StartDB())
         return 1;
 
+    std::shared_ptr<void> dbHandle(nullptr, [](void*) { StopDB(); });
+
     if (vm.count("update-databases-only"))
         return 0;
 
@@ -167,8 +169,6 @@ int main(int argc, char** argv)
     // Load IP Location Database
     sIPLocation->Load();
 
-    std::shared_ptr<void> dbHandle(nullptr, [](void*) { StopDB(); });
-
     std::shared_ptr<Trinity::Asio::IoContext> ioContext = std::make_shared<Trinity::Asio::IoContext>();
 
     // Start the listening port (acceptor) for auth connections