win32/win32.c: suppress warning redeclared
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@36563 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
win32/win32.c: suppress warning redeclared
*_s functions are declared if MINGW_HAS_SECURE_API is defined.
Follow up r36556.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@36563 b2dd03c8-39d4-4d8f-98ff-823fe69b080e