Fix Windows build
Fix Windows build

Summary: It was broken due to oddities with how MSVC handles expanding `##__VA_ARGS__` within the parameters to macros. Rather than deal with the pre-processor, just return the check to how it was and use `EXPECT_TRUE(false)` to achieve the same effect.

Reviewed By: yfeldblum

Differential Revision: D13850142

fbshipit-source-id: 887b39fb3c6072219c3f4748599bc7b707efbf25

facebook/folly,facebook/folly,facebook/folly,facebook/folly,facebook/folly