Typo

git-svn-id: http://subversion.jackaudio.org/jack/jack2/trunk/jackmp@2266 0c269be4-1314-0410-8aa9-9f06e86f4224

common/JackMutex.h

@@ -88,7 +88,7 @@ class JackMutex
             assert(res == 0);
             res = pthread_mutex_init(&fMutex, &mutex_attr);
             assert(res == 0);
-            pthread_mutexattr_destroy(&mutex_attr);
+            res = pthread_mutexattr_destroy(&mutex_attr);
             assert(res == 0);
         }
         virtual ~JackMutex()