BLooper: don't delete a launch_daemon port.

* Unless the service is really to be quit, the port should stay around;
  but that decision is to be made by the launch_daemon, not the service
  itself.

headers/os/app/Looper.h

@@ -172,6 +172,7 @@ private:
 			BList*			fCommonFilters;
 			bool			fTerminating;
 			bool			fRunCalled;
+			bool			fOwnsPort;
 			uint32			_reserved[11];
 };
 

src/kits/app/Application.cpp

@@ -267,6 +267,8 @@ BApplication::BApplication(const char* signature, const char* looperName,
 		looperName != NULL ? looperName : kDefaultLooperName)
 {
 	_InitData(signature, initGUI, _error);
+	if (port < 0)
+		fOwnsPort = false;
 }
 
 

src/kits/app/Looper.cpp

@@ -1,5 +1,5 @@
 /*
- * Copyright 2001-2013 Haiku, Inc. All rights reserved
+ * Copyright 2001-2015 Haiku, Inc. All rights reserved
  * Distributed under the terms of the MIT License.
  *
  * Authors:
@@ -130,7 +130,7 @@ BLooper::~BLooper()
 	}
 
 	// Close the message port and read and reply to the remaining messages.
-	if (fMsgPort >= 0)
+	if (fMsgPort >= 0 && fOwnsPort)
 		close_port(fMsgPort);
 
 	// Clear the queue so our call to IsMessageWaiting() below doesn't give
@@ -143,13 +143,15 @@ BLooper::~BLooper()
 			// msg will automagically post generic reply
 	}
 
-	do {
-		delete ReadMessageFromPort(0);
-			// msg will automagically post generic reply
-	} while (IsMessageWaiting());
+	if (!fOwnsPort) {
+		do {
+			delete ReadMessageFromPort(0);
+				// msg will automagically post generic reply
+		} while (IsMessageWaiting());
 
+		delete_port(fMsgPort);
+	}
 	fDirectTarget->Release();
-	delete_port(fMsgPort);
 
 	// Clean up our filters
 	SetCommonFilterList(NULL);
@@ -945,6 +947,7 @@ BLooper::_InitData(const char* name, int32 priority, port_id port,
 	fPreferred = NULL;
 	fThread = B_ERROR;
 	fTerminating = false;
+	fOwnsPort = true;
 	fMsgPort = -1;
 	fAtomicCount = 0;