mptcp: ensure snd_una is properly initialized on connect
JIRA: https://issues.redhat.com/browse/RHEL-47943 JIRA: https://issues.redhat.com/browse/RHEL-47944 Upstream Status: commit 8031b58c3a9b CVE: CVE-2024-40931
Signed-off-by: Florian Westphal fwestpha@redhat.com