message: Re-enable lang/objc/modules/TestObjCModules
  The reason this test was disabled is no longer relevant. However, it
  didn't turn into an unexpected success because of a syntax error in the
  test itself. This commit fixes that and re-enables the test.
diff: @@ -26,12 +26,8 @@ class ObjCModulesTestCase(TestBase):
  self.line = line_number('main.m', '// Set breakpoint 0 here.')
  @skipUnlessDarwin
  - @unittest2.expectedFailure("rdar://20416388")
  @skipIf(macos_version=["<", "10.12"])
  def test_expr(self):
  - if not self.applies():
  - return
  -
  self.build()
  exe = self.getBuildArtifact("a.out")
  self.runCmd("file " + exe, CURRENT_EXECUTABLE_SET)
  