Stop the service if the user quits via the tray icon

tools/sunshinesvc.cpp

@@ -301,9 +301,16 @@ ServiceMain(DWORD dwArgc, LPTSTR *lpszArgv) {
         }
         break;
 
-      case WAIT_OBJECT_0 + 1:
+      case WAIT_OBJECT_0 + 1: {
         // Sunshine terminated itself.
+
+        DWORD exit_code;
+        if (GetExitCodeProcess(process_info.hProcess, &exit_code) && exit_code == ERROR_SHUTDOWN_IN_PROGRESS) {
+          // Sunshine is asking for us to shut down, so gracefully stop ourselves.
+          SetEvent(stop_event);
+        }
         break;
+      }
     }
 
     CloseHandle(process_info.hThread);