Correct JackMessageBuffer::SetInitCallback.

common/JackMessageBuffer.cpp

@@ -111,7 +111,7 @@ bool JackMessageBuffer::Execute()
                 /* and we're done */
                 fGuard.Signal();
             }
-
+            
             /* releasing the mutex reduces contention */
             fGuard.Unlock();
             Flush();
@@ -177,17 +177,17 @@ int JackMessageBuffer::SetInitCallback(JackThreadInitCallback callback, void *ar
         fGuard.Signal()
         // wait for it to be done  
         fGuard.Wait();
+        // and we're done 
+        fGuard.Unlock();
         */
 
+        fGuard.Unlock();
         int count = 0;
         while (fInit && ++count < 1000) {
             /* wake msg buffer thread */
             fGuard.Signal();
             JackSleep(1000);
         }
-               
-        /* and we're done */
-        fGuard.Unlock();
         if (count == 1000) goto error;
         return 0;
     }

tests/test.cpp

@@ -163,7 +163,7 @@ void Collect(FrameTimeCollector* TheFrame)
 
 void Jack_Thread_Init_Callback(void *arg)
 {
-    Log("Init callback has been successfully called. (msg from callback)\n");
+    Log("Init callback has been successfully called from thread = %x. (msg from callback)\n", pthread_self());
     init_clbk = 1;
 }