Fix the build of detail/CacheLocality.h on Windows

Summary: It was broken by D5139886 which added a call to `std::__throw_bad_alloc` without first including the correct portability header.

Reviewed By: yfeldblum

Differential Revision: D5273016

fbshipit-source-id: cac1772f41ae5942a29cefa69fb07d9cf94b5aab

folly/detail/CacheLocality.h

@@ -34,6 +34,7 @@
 #include <folly/Memory.h>
 #include <folly/Portability.h>
 #include <folly/ThreadId.h>
+#include <folly/portability/BitsFunctexcept.h>
 #include <folly/portability/Memory.h>
 
 namespace folly {