Handle session resumption in SSLv23_client_method.

This fixes version mismatches on resumption without rewriting the entirety of
OpenSSL's version negotiation logic. (Which still badly needs to happen.)

BUG=chromium:417134

Change-Id: Ifa0c5dd2145e37fcd39eec25dfb3561ddb87c9f0
Reviewed-on: https://boringssl-review.googlesource.com/1823
Reviewed-by: Adam Langley <agl@google.com>
1 file changed