Fixed typo in the flags

etc/ser-oob.cfg

@@ -257,7 +257,7 @@ flags
   FLAG_SERWEB_RSVD1   : 9, # bit reserved for use with serweb
   FLAG_SERWEB_RSVD2   : 10, # bit reserved for use with serweb
   FLAG_SESSIONTIMER   : 11, # indicates that the UAC supports Session Timer
-  FLAG_RR_DONE        : 12; # the request got already one RR header
+  FLAG_RR_DONE        : 12, # the request got already one RR header
   FLAG_RTP_PROXY      : 13; # the RTP proxy is turned on
 
 avpflags