undeclared identifier: IMAGE_SIZEOF_BASE_RELOCATION, IMAGE_SIZEOF_BASE_RELOCATION #1

Hi,
i get the following errors while building current master:
y:\fancycode-memorymodule-d2e86ce\memorymodule.c(179) : error C2065: 'IMAGE_SIZEOF_BASE_RELOCATION' : undeclared identifier
y:\fancycode-memorymodule-d2e86ce\memorymodule.c(180) : error C2065: 'IMAGE_SIZEOF_BASE_RELOCATION' : undeclared identifier

build environment:
Microsoft Visual Studio 2008
Version 9.0.21022.8 RTM
Microsoft .NET Framework
Version 3.5 SP1

am i missing something?