Pulseaudio: Termination stream before operation release can lead locking

Cases when Pulseaudio server releases stream before operation releasing
can be lead locking in pa_threaded_mainloop_wait forever.

Test if operation is running before running pa_threaded_mainloop_wait
which should prevent forever waiting releasing lock.

src/hostapi/pulseaudio/pa_linux_pulseaudio_cb.c

@@ -119,12 +119,15 @@ void PaPulseAudio_ReleaseOperation(PaPulseAudio_HostApiRepresentation *hostapi,
 
     while( waitOperation > 0 )
     {
-        PaPulseAudio_Lock( hostapi->mainloop );
-        pa_threaded_mainloop_wait( hostapi->mainloop );
-        PaPulseAudio_UnLock( hostapi->mainloop );
-
         localOperationState = pa_operation_get_state( localOperation );
 
+        if( localOperationState == PA_OPERATION_RUNNING )
+        {
+            PaPulseAudio_Lock( hostapi->mainloop );
+            pa_threaded_mainloop_wait( hostapi->mainloop );
+            PaPulseAudio_UnLock( hostapi->mainloop );
+        }
+
         // No wait if operation have been DONE or CANCELLED
         if( localOperationState != PA_OPERATION_RUNNING)
         {