Bug 1372383 - Improve SDP parsing. r=bwc

MozReview-Commit-ID: EJOvtMjQsav

media/webrtc/signaling/src/sdp/sipcc/sdp_attr.c

@@ -1189,6 +1189,9 @@ sdp_result_e sdp_parse_attr_fmtp (sdp_t *sdp_p, sdp_attr_t *attr_p,
                     temp = PL_strtok_r(NULL, ",", &strtok_state);
                     iter++;
                 }
+            } else {
+              SDP_FREE(temp_ptr);
+              return SDP_INVALID_PARAMETER;
             }
 
             fmtp_p->fmtp_format = SDP_FMTP_CODEC_INFO;