zstd.h uses undefined MIN() macro

[indygreg]

Starting with version 1.3.2, zstd.h uses MIN(), but only if ZSTD_STATIC_LINKING_ONLY is defined. MIN() may not be defined since it isn't a standard macro in C (there is a definition in zstd_internal.h). This can lead to compiler errors.

[Cyan4973]

Thanks for notification @indygreg !
This is indeed a mistake, MIN() should not be needed in zstd.h.
This will be fixed.

[Cyan4973]

fix merged into dev