Windows NT 3.1 build 264

Windows NT 3.1 build 1.264 is a build of Windows NT 3.1, mentioned in the file  from the Windows NT 4.0 source code.

// BUGBUG: A bug in hiveini causes a bogus length to be returned // from winreg APIs. This bug should be fixed in build 1.264. In the meantime, // this is the value: