remove redundant conditions, its safe to deallocate NULL pointers with free()
remove redundant conditions, its safe to deallocate NULL pointers with free()

eighthave/libsqlfs,spthaolt/libsqlfs,guardianproject/libsqlfs,guardianproject/libsqlfs,spthaolt/libsqlfs,eighthave/libsqlfs,spthaolt/libsqlfs,guardianproject/libsqlfs,eighthave/libsqlfs,guardianproject/libsqlfs,eighthave/libsqlfs,spthaolt/libsqlfs,eighthave/libsqlfs,guardianproject/libsqlfs,spthaolt/libsqlfs