Fix warning: ignoring '#pragma warning '

[tindy2013]

The #pragma warning macro only works with MSVC compiler on Windows. On other compilers like MinGW GCC, some warnings will pop up. Adding a MSVC-specific macro to the condition will fix this.

[PerMalmberg]

So _WIN32 is defined in MinGW, but not _MSC_VER? Wouldn't it be enough to check only on _MSC_VER?

[tindy2013]

_MSC_VER stands for MSVC compiler's version number, and it's one of the Microsoft-specific predefined macros, so it should be enough by checking this macro.

[PerMalmberg]

_MSC_VER stands for MSVC compiler's version number, and it's one of the Microsoft-specific predefined macros, so it should be enough by checking this macro.

Ok, will you please update the PR to do that?

[tindy2013]

@PerMalmberg updated

[PerMalmberg]

Thanks, @tindy2013