fix for warnings when including freetdm.h

git-svn-id: http://svn.openzap.org/svn/openzap/branches/sangoma_boost@1072 a93c3328-9c30-0410-af19-c9cd2b2d52af

libs/freetdm/src/include/freetdm.h

@@ -554,7 +554,7 @@ struct ftdm_channel {
 	uint32_t extra_id;
 	ftdm_chan_type_t type;
 	ftdm_socket_t sockfd;
-	ftdm_channel_flag_t flags;
+	uint32_t flags;
 	uint32_t pflags;
 	uint32_t sflags;
 	ftdm_alarm_flag_t alarm_flags;