Mark Mielke
45bb7d8530
VNCSConnectionST clipboard functions should check state before access.
Clipboard functions may run on connections that are not yet at
RFBSTATE_NORMAL. Due to recent hardening of the accessCheck() function,
it is important to validate that the state is RFBSTATE_NORMAL before
calling accessCheck().
Fixes #1599.
(cherry picked from commit 995f443ef7)