Remove the variable 'bufused', which came over from winnet.c in
mistaken cut and paste and is just a bug.


git-svn-id: svn://svn.tartarus.org/sgt/putty@9967 cda61777-01e9-0310-a592-d414129be87e
Fix a few more memory and resource leaks.


git-svn-id: svn://svn.tartarus.org/sgt/putty@9968 cda61777-01e9-0310-a592-d414129be87e
Add a bob script to do Coverity scanning.


git-svn-id: svn://svn.tartarus.org/sgt/putty@9969 cda61777-01e9-0310-a592-d414129be87e
Back out r9964. I wasn't paying attention: every control is in the
byid tree but not all of them are in the byctrl tree.


git-svn-id: svn://svn.tartarus.org/sgt/putty@9970 cda61777-01e9-0310-a592-d414129be87e