Correctly treat error case and memory management
Fixed padding management
Merge pull request #908 from llyzs/llyzs

Frame acknowledgement should be sent by client UI.
Merge pull request #906 from hardening/hardening8

Correctly treat error case and memory management when reading certificate
Added error messages when orders processing fails
Added a check for exponent_length
Added error messages for certificate parsing
Merge pull request #910 from hardening/hardening9

Fixed padding management when reading certificate
Merge pull request #911 from hardening/hardening10

Verbose message when processing fails
libfreerdp-core: disable sending frame ack (unknown pduType2 error)