Fixed missing closing tags.

git-svn-id: svn://svn.icculus.org/fs2open/trunk@10629 387891d4-d844-0410-90c0-e4c51a9137d3
fixes a bunch of C4800 warnings

git-svn-id: svn://svn.icculus.org/fs2open/trunk@10631 387891d4-d844-0410-90c0-e4c51a9137d3
Fixes another C4800: Conversion from int to bool warning 

git-svn-id: svn://svn.icculus.org/fs2open/trunk@10632 387891d4-d844-0410-90c0-e4c51a9137d3