Fix handling of multiple media lines in the incoming SDP offer. Now pjsua-lib will be able to select the best media line to handle

git-svn-id: https://svn.pjsip.org/repos/pjproject/trunk@2079 74dad513-b988-da41-8d7b-12977e46ad98
diff --git a/pjsip/include/pjsua-lib/pjsua_internal.h b/pjsip/include/pjsua-lib/pjsua_internal.h
index 6865344..8d5a7b9 100644
--- a/pjsip/include/pjsua-lib/pjsua_internal.h
+++ b/pjsip/include/pjsua-lib/pjsua_internal.h
@@ -63,6 +63,7 @@
     pjsua_call_media_status media_st;/**< Media state.			    */
     pjmedia_dir		 media_dir; /**< Media direction.		    */
     pjmedia_session	*session;   /**< The media session.		    */
+    int			 audio_idx; /**< Index of m=audio in SDP.	    */
     pj_uint32_t		 ssrc;	    /**< RTP SSRC			    */
     int			 conf_slot; /**< Slot # in conference bridge.	    */
     pjsip_evsub		*xfer_sub;  /**< Xfer server subscription, if this