PUSH_UPDATE server: free temporary options after sending message

Clean up options on success and send failure to avoid leaking
memory allocated while parsing outgoing updates.

Change-Id: Ie4a7e0702a30d2a637c3dfe03f6c62d8a9901aae
Signed-off-by: Marco Baffo <marco@mandelbit.com>
Acked-by: Razvan Cojocaru <razvanc@mailbox.org>
Gerrit URL: https://gerrit.openvpn.net/c/openvpn/+/1992
Message-Id: <20261013121338.27882-1-gert@greenie.muc.de>
URL: https://www.mail-archive.com/openvpn-devel@lists.sourceforge.net/msg39864.html
Signed-off-by: Gert Doering <gert@greenie.muc.de>
(cherry picked from commit 103d803)

Author: mrbff

src/openvpn/push_util.c

@@ -165,6 +165,7 @@ send_single_push_update(struct multi_context *m, struct multi_instance *mi, stru
     {
         if (!send_control_channel_string(c, BSTR(&e->buf), D_PUSH))
         {
+            uninit_options(&o);
             return false;
         }
 
@@ -219,6 +220,7 @@ send_single_push_update(struct multi_context *m, struct multi_instance *mi, stru
         update_vhash(m, mi, o.ifconfig_local, o.ifconfig_ipv6_local);
     }
 
+    uninit_options(&o);
     return true;
 }