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-rw-r--r--channels/chan_sip.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/channels/chan_sip.c b/channels/chan_sip.c
index 84e7560cc..7dce504a3 100644
--- a/channels/chan_sip.c
+++ b/channels/chan_sip.c
@@ -1207,7 +1207,7 @@ static int add_text(struct sip_request *req, const char *text);
static int add_digit(struct sip_request *req, char digit);
static int add_vidupdate(struct sip_request *req);
static void add_route(struct sip_request *req, struct sip_route *route);
-static int copy_header(struct sip_request *req, struct sip_request *orig, char *field);
+static int copy_header(struct sip_request *req, const struct sip_request *orig, const char *field);
static int copy_all_header(struct sip_request *req, struct sip_request *orig, char *field);
static int copy_via_headers(struct sip_pvt *p, struct sip_request *req, struct sip_request *orig, char *field);
static void set_destination(struct sip_pvt *p, char *uri);
@@ -4274,7 +4274,7 @@ static int add_line(struct sip_request *req, const char *line)
}
/*! \brief Copy one header field from one request to another */
-static int copy_header(struct sip_request *req, struct sip_request *orig, char *field)
+static int copy_header(struct sip_request *req, const struct sip_request *orig, const char *field)
{
const char *tmp = get_header(orig, field);