TSK_FS_INFO must be deallocated via tsk_fs_free

Otherwise the critical section in TSK_FS_INFO is not freed
Fixed critical section leak in TSK_FS_INFO
Fixed critical section leak in TSK_FS_INFO
Fixed critical section leak in TSK_FS_INFO
Fixed critical section leak in TSK_FS_INFO
Merge pull request #286 from antonkukoba/patch-4

TSK_FS_INFO must be deallocated via tsk_fs_free