tree ba1286c2e4be51ed5dc3aac1f51c83fa781fc898
parent 38e8ce32afbaa82f67d992b9f3056f281fe69259
author Mark Adler <madler@alumni.caltech.edu> 1486281517 -0800
committer Mark Adler <madler@alumni.caltech.edu> 1487227166 -0800

Avoid a conversion error in gzseek when off_t type too small.

This is a problem in the odd case that the second argument of
LSEEK is a larger type than off_t. Apparently MinGW defines off_t
to be 32 bits, but _lseeki64 has a 64-bit second argument.

Also undo a previous commit to permit MinGW to use _lseeki64.