Odd boolean mask. Should it be `<<` instead of `<`?

[valeriyvan]

https://github.com/apple/swift/blob/d106dc135f562790c9de55efc84dc947bb233e65/stdlib/toolchain/CompatibilityDynamicReplacements/DynamicReplaceable.cpp#L55

  auto origKey = compat50Key.get();
  if ((origKey & 0x1) != 0) {
    auto mask = ((uintptr_t)-1) < 1;   // <<<<<<< WHAT???
    auto resetKey = origKey & mask; // then bitwise AND with integer and boolean???
    compat50Key.set(resetKey);
    return nullptr;
  }

[finagolfin]

@aschwaighofer, you wrote this three years back, please chime in when you get a chance.

[valeriyvan]

Code in question still in place.

[stephentyrone]

@valeriyvan OK to close this?

[valeriyvan]

fixed with #82264