Coverity 1107314: Buffer not null terminated

git-svn-id: svn://svn.icculus.org/fs2open/trunk/fs2_open@9965 387891d4-d844-0410-90c0-e4c51a9137d3
Coverity 1107315: Buffer not null terminated

git-svn-id: svn://svn.icculus.org/fs2open/trunk/fs2_open@9966 387891d4-d844-0410-90c0-e4c51a9137d3