oscpack / udpSocket: invert the "break_" semaphore (#7963)

#changelog #addon

Author: artificiel

addons/ofxOsc/libs/oscpack/src/ip/posix/UdpSocket.cpp

@@ -356,7 +356,8 @@ class SocketReceiveMultiplexer::Implementation{
 	std::vector< std::pair< PacketListener*, UdpSocket* > > socketListeners_;
 	std::vector< AttachedTimerListener > timerListeners_;
 
-	volatile bool break_;
+	std::atomic<bool> break_ = false;
+
 	int breakPipe_[2]; // [0] is the reader descriptor and [1] the writer
 
 	double GetCurrentTimeMs() const
@@ -423,7 +424,6 @@ class SocketReceiveMultiplexer::Implementation{
 
     void Run()
 	{
-		break_ = false;
         char *data = 0;
 
         try{
@@ -540,11 +540,16 @@ class SocketReceiveMultiplexer::Implementation{
             }
 
             delete [] data;
+			break_ = false;
+
         }catch(...){
             if( data )
                 delete [] data;
+			break_ = false;
+
             throw;
         }
+		
 	}
 
     void Break()