improve sofia_glue_get_url_from_contact and its usage. Should fix MODENDP-33.

git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@6075 d0543943-73ff-0310-b7d9-9358b9ac24b2

src/mod/endpoints/mod_sofia/sofia_glue.c

@@ -1572,6 +1572,12 @@ char *sofia_glue_get_url_from_contact(char *buf, uint8_t to_dup)
 		}
 
 		*e = '\0';
+	} else {
+		if (to_dup) {
+			url = strdup(buf);
+		} else {
+			url = buf;
+		}
 	}
 
 	return url;