[Imp] mpt/osinfo/windows_wine_version.hpp: Speedup Wine detection in modern builds.

git-svn-id: https://source.openmpt.org/svn/openmpt/trunk/OpenMPT@24794 56274372-70c3-4bfc-bfc3-4c3a0b034d27

Author: manxorist

src/mpt/osinfo/windows_wine_version.hpp

@@ -31,6 +31,9 @@ namespace windows {
 inline bool current_is_wine() {
 	bool result = false;
 #if MPT_OS_WINDOWS && !MPT_OS_WINDOWS_WINRT
+#if MPT_WINNT_AT_LEAST(MPT_WIN_8)
+	const bool hasKB2533623 = true;
+#else // !Win8
 	bool hasKB2533623 = false;
 	mpt::osinfo::windows::Version WindowsVersion = mpt::osinfo::windows::Version::Current();
 	if (WindowsVersion.IsAtLeast(mpt::osinfo::windows::Version::Win8)) {
@@ -45,6 +48,7 @@ inline bool current_is_wine() {
 			hKernel32DLL = NULL;
 		}
 	}
+#endif // Win8
 	HMODULE hNTDLL = NULL;
 	MPT_MAYBE_CONSTANT_IF (hasKB2533623) {
 #if defined(LOAD_LIBRARY_SEARCH_SYSTEM32)