Fix for crasher on Win XP, submitted by Kanttori.

size is 32 on XP, while sizeof(ri) gives 40. Pick the smaller one to pass to memcpy to prevent crashes.

intern/ghost/intern/GHOST_SystemWin32.cpp

@@ -450,7 +450,7 @@ GHOST_TKey GHOST_SystemWin32::hardKey(GHOST_IWindow *window, WPARAM wParam, LPAR
 		GetRawInputData((HRAWINPUT)lParam, RID_INPUT, data, &size, sizeof(RAWINPUTHEADER)))
 	{
 		RAWINPUT ri;
-		memcpy(&ri,data,sizeof(ri));
+		memcpy(&ri,data,(size < sizeof(ri)) ? size : sizeof(ri));
 
 		if (ri.header.dwType == RIM_TYPEKEYBOARD)
 		{