fix #654, crash when source cleanup for edge. 2.0.221

@@ -343,6 +343,7 @@ Remark:
 
 ## History
 
+* v2.0, 2016-11-05, fix #654, crash when source cleanup for edge. 2.0.221
 * v2.0, 2016-10-26, fix #666, crash when source cleanup for http-flv. 2.0.220
 * v2.0, 2016-10-10, fix #661, close fd after thread stopped. 2.0.219
 * v2.0, 2016-09-23, support asprocess for oryx. 2.0.218

@@ -31,7 +31,7 @@ CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 // current release version
 #define VERSION_MAJOR       2
 #define VERSION_MINOR       0
-#define VERSION_REVISION    220
+#define VERSION_REVISION    221
 
 // generated by configure, only macros.
 #include <srs_auto_headers.hpp>