Fix libtiff compilation with MinGW-w32 6.3

Avoid redefining snprintf as this breaks -Wformat-related macros in this
compiler stdio.h -- and is unnecessary anyhow.

Closes #17936.
This commit is contained in:
Vadim Zeitlin
2017-12-08 03:30:41 +01:00
parent b8bc595546
commit 879876e047