res_pjsip_session: Avoid sometimes-uninitialized warning with Clang.

ASTERISK-29248

Change-Id: I2b17bd5ffb246bc64c463402c9831413da78a556

diff --git a/res/res_pjsip_session.c b/res/res_pjsip_session.c
index b09e5136df7337dd17b9f2164c3f9616ffcf8f49..ac4b8771e8de2c7f4b87de989a83abc0773f3ad0 100644 (file)
--- a/res/res_pjsip_session.c
+++ b/res/res_pjsip_session.c
@@ -2190,7 +2190,7 @@ static int sip_session_refresh(struct ast_sip_session *session,
        pjsip_inv_session *inv_session = session->inv_session;
        pjmedia_sdp_session *new_sdp = NULL;
        pjsip_tx_data *tdata;
-       int res;
+       int res = -1;
        SCOPE_ENTER(3, "%s: New SDP? %s  Queued? %s DP: %s  DA: %s\n", ast_sip_session_get_name(session),
                generate_new_sdp ? "yes" : "no", queued ? "yes" : "no",
                pending_media_state ? ast_str_tmp(256, ast_stream_topology_to_str(pending_media_state->topology, &STR_TMP)) : "none",