slirp: fix slirp_add_exec() leaks

Free the list elements allocated in add_exec().
Signed-off-by: NMarc-André Lureau <marcandre.lureau@redhat.com>
Signed-off-by: NSamuel Thibault <samuel.thibault@ens-lyon.org>

slirp/misc.h

@@ -12,7 +12,7 @@ struct ex_list {
 	void *ex_chardev;
 	struct in_addr ex_addr;		/* Server address */
 	int ex_fport;                   /* Port to telnet to */
-	const char *ex_exec;            /* Command line of what to exec */
+	char *ex_exec;                  /* Command line of what to exec */
 	struct ex_list *ex_next;
 };
 

slirp/slirp.c

@@ -342,6 +342,14 @@ Slirp *slirp_init(int restricted, bool in_enabled, struct in_addr vnetwork,
 
 void slirp_cleanup(Slirp *slirp)
 {
+    struct ex_list *e, *next;
+
+    for (e = slirp->exec_list; e; e = next) {
+        next = e->ex_next;
+        g_free(e->ex_exec);
+        g_free(e);
+    }
+
     QTAILQ_REMOVE(&slirp_instances, slirp, entry);
 
     unregister_savevm(NULL, "slirp", slirp);