fix: return@try 语法错误 — 改用 if(started) 包裹 STOP 逻辑

app/src/main/java/com/qwenpaw/miracast/AirDisplayService.kt

@@ -68,8 +68,8 @@ class AirDisplayService : Service() {
                 }
                 ACTION_STOP -> {
                     Log.w(TAG, "  收到 STOP (started=$started)")
-                    if (!started) return@try START_NOT_STICKY
-                    started = false // 立即标记，防止重复 STOP
+                    if (started) {
+                        started = false
                         scope.launch {
                             Log.w(TAG, "  manager.stop()...")
                             manager.stop()
@@ -81,6 +81,7 @@ class AirDisplayService : Service() {
                         stopSelf()
                     }
                 }
+            }
             START_NOT_STICKY
         } catch (e: Exception) {
             Log.wtf(TAG, "FATAL in onStartCommand", e)