fix a typo in commit 4b483eaddf74 (regarding MKL on windows)
fix a typo in commit 4b483eaddf74 (regarding MKL on windows)

pthulhu/eigen,cjntaylor/eigen,cjntaylor/eigen,pthulhu/eigen,pthulhu/eigen,cjntaylor/eigen,pthulhu/eigen,pthulhu/eigen,cjntaylor/eigen