Fixed compilation under MINGW64

Necessary on mingw64 2.22
diff --git a/xmltest.cpp b/xmltest.cpp
index c8e1b0b..7a3c508 100644
--- a/xmltest.cpp
+++ b/xmltest.cpp
@@ -280,7 +280,12 @@
 	#endif

 

 	#if defined(_MSC_VER) || defined(MINGW32) || defined(__MINGW32__)

-		_mkdir( "resources/out/" );

+		#if defined __MINGW64_VERSION_MAJOR && defined __MINGW64_VERSION_MINOR

+			//MINGW64: both 32 and 64-bit

+			mkdir( "resources/out/" );

+                #else

+                	_mkdir( "resources/out/" );

+                #endif

 	#else

 		mkdir( "resources/out/", S_IRWXU | S_IRWXG | S_IROTH | S_IXOTH);

 	#endif