Tolerate packets that are larger than negotiated MTU after decompression
In July 2016, the "Fixed regression with CSTP MTU handling" patch
(http://git.infradead.org/users/dwmw2/openconnect.git/commitdiff/
90e1555494dbc1cf462552679f9aa3d30451d123)
allowed openconnect to gracefully handle uncompressed CSTP packets larger
than the negotiated MTU.
This patch extends that approach to tolerate compressed packets which are
larger than the negotiated MTU after decompression.
Signed-off-by: Daniel Lenski <dlenski@gmail.com>