fix FSCORE-146

git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@8869 d0543943-73ff-0310-b7d9-9358b9ac24b2

src/switch_ivr_originate.c

@@ -1200,10 +1200,12 @@ SWITCH_DECLARE(switch_status_t) switch_ivr_originate(switch_core_session_t *sess
 							}
 						}
 
+						if ((ringback.fh || ringback.audio_buffer) && write_frame.codec && write_frame.datalen) {
 							if (switch_core_session_write_frame(session, &write_frame, SWITCH_IO_FLAG_NONE, 0) != SWITCH_STATUS_SUCCESS) {
 								break;
 							}
 						}
+					}
 
 				} else {
 					switch_yield(1000);