win32.c: memcpy instead of strlcpy

	* win32/win32.c (cmdglob): memcpy the exact size instead of
	  strlcpy with +1.

	* win32/win32.c (w32_cmdvector): ditto, with NUL-terminating.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_4@62874 b2dd03c8-39d4-4d8f-98ff-823fe69b080e