dialog: prevent double free in case of errors

(cherry picked from commit eef59c1)
OpenSIPS · May 19, 2014 · c80b51b · c80b51b
1 parent da5e51c
commit c80b51b
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/modules/dialog/dlg_tophiding.c b/modules/dialog/dlg_tophiding.c
@@ -211,6 +211,8 @@ int dlg_replace_contact(struct sip_msg* msg, struct dlg_cell* dlg)
 		LM_ERR("failed inserting '<sip:'\n");
 		goto error;
 	}
+	/* make sure we do not free this string in case of a further error */
+	prefix = NULL;
 
 	if ((lump = insert_subst_lump_after(lump, SUBST_SND_ALL, HDR_CONTACT_T)) == 0) {
 		LM_ERR("failed inserting SUBST_SND buf\n");