FS-8545 read lock regression

src/mod/applications/mod_conference/conference_video.c

@@ -1274,6 +1274,7 @@ void conference_video_write_canvas_image_to_codec_group(conference_obj_t *confer
 				}
 
 				if (switch_core_session_media_flow(imember->session, SWITCH_MEDIA_TYPE_VIDEO) == SWITCH_MEDIA_FLOW_RECVONLY) {
+					switch_core_session_rwunlock(imember->session);
 					continue;
 				}
 
@@ -2731,6 +2732,7 @@ void *SWITCH_THREAD_FUNC conference_video_muxing_thread_run(switch_thread_t *thr
 				}
 
 				if (switch_core_session_media_flow(imember->session, SWITCH_MEDIA_TYPE_VIDEO) == SWITCH_MEDIA_FLOW_RECVONLY) {
+					switch_core_session_rwunlock(imember->session);
 					continue;
 				}
 
@@ -3080,6 +3082,7 @@ void *SWITCH_THREAD_FUNC conference_video_super_muxing_thread_run(switch_thread_
 			}
 
 			if (switch_core_session_media_flow(imember->session, SWITCH_MEDIA_TYPE_VIDEO) == SWITCH_MEDIA_FLOW_RECVONLY) {
+				switch_core_session_rwunlock(imember->session);
 				continue;
 			}