warning when join thread failed. 1.0.29

@@ -122,7 +122,9 @@ void SrsThread::stop()
         // wait the thread to exit.
         int ret = st_thread_join(tid, NULL);
         // TODO: FIXME: the join maybe failed, should use a variable to ensure thread terminated.
-        srs_assert(ret == 0);
+        if (ret != 0) {
+            srs_warn("join thread failed. code=%d", ret);
+        }
         
         tid = NULL;
     }

@@ -31,7 +31,7 @@ CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 // current release version
 #define VERSION_MAJOR       1
 #define VERSION_MINOR       0
-#define VERSION_REVISION    28
+#define VERSION_REVISION    29
 
 // server info.
 #define RTMP_SIG_SRS_KEY "SRS"