GitLab

The function snprintf is not available in Visual Studio prior to VS
2015. In some places this omission is dealt with with a #define to map
snprintf to _snprintf. This was never a good idea (_snprintf doesn't
guarantee null-termination) and with VS 2015 it is not even legal.

This change conditionally disables one instance of this remapping.

The build errors that occur without this change are:

stdio.h(1926): warning C4005: 'snprintf': macro redefinition
stdio.h(1926): note: command-line arguments:  see previous
definition of 'snprintf'
stdio.h(1929): fatal error C1189: #error:  Macro definition of
snprintf conflicts with Standard Library function declaration

R=scottmg@chromium.org
BUG=440500

Review URL: https://codereview.chromium.org/1069433002

Cr-Commit-Position: refs/heads/master@{#324157}