Use open/close mutex for jack_client_new API.

git-svn-id: http://subversion.jackaudio.org/jack/jack2/trunk/jackmp@3123 0c269be4-1314-0410-8aa9-9f06e86f4224

common/JackAPI.cpp

@@ -283,11 +283,15 @@ EXPORT void jack_set_info_function (print_function func)
 
 EXPORT jack_client_t* jack_client_new(const char* client_name)
 {
+    assert(gOpenMutex);
+    gOpenMutex->Lock();
     jack_error("jack_client_new: deprecated");
     int options = JackUseExactName;
     if (getenv("JACK_START_SERVER") == NULL)
         options |= JackNoStartServer;
-    return jack_client_open_aux(client_name, (jack_options_t)options, NULL, NULL);
+    jack_client_t* res = jack_client_open_aux(client_name, (jack_options_t)options, NULL, NULL);
+    gOpenMutex->Unlock();
+    return res;
 }
 
 EXPORT void* jack_port_get_buffer(jack_port_t* port, jack_nframes_t frames)