SIP_DLG_XCHG_FROM
SIP_DLG_XCHG_FROM);
hdr = sip_get_header(sip_msg, what == SIP_DLG_XCHG_FROM ? SIP_FROM :
if (what == SIP_DLG_XCHG_FROM) {
if (what == SIP_DLG_XCHG_FROM) {
SIP_DLG_XCHG_FROM);