res_pjsip: Allow + at the beginning of a phone number when user_eq_phone is enabled.

git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@427257 65c4cc65-6c06-0410-ace0-fbb531ad65f3

res/res_pjsip.c

@@ -2150,6 +2150,10 @@ void ast_sip_add_usereqphone(const struct ast_sip_endpoint *endpoint, pj_pool_t
 		return;
 	}
 
+	if (pj_strbuf(&sip_uri->user)[0] == '+') {
+		i = 1;
+	}
+
 	/* Test URI user against allowed characters in AST_DIGIT_ANY */
 	for (; i < pj_strlen(&sip_uri->user); i++) {
 		if (!strchr(AST_DIGIT_ANYNUM, pj_strbuf(&sip_uri->user)[i])) {