zip_source_rollback_write —
undo changes to zip source
#include <zip.h>
void
  
  zip_source_rollback_write(zip_source_t
    *source);
The function zip_source_rollback_write() reverts changes
  written to source, restoring the data before
  zip_source_begin_write(3)
  was called. Usually this removes temporary files or frees buffers.
Upon successful completion 0 is returned. Otherwise, -1 is returned and the
  error information in source is set to indicate the
  error.
zip_source_rollback_write() was added in libzip 1.0.