XFAIL pthreads test on Windows.

This test needs to be ported to c++ threads.

llvm-svn: 245751

lldb/test/functionalities/expr-doesnt-deadlock/TestExprDoesntBlock.py

@@ -25,6 +25,7 @@ class ExprDoesntDeadlockTestCase(TestBase):
     @dwarf_test
     @expectedFailureFreeBSD('llvm.org/pr17946')
     @expectedFlakeyLinux # failed 1/365 test runs, line 61, thread.IsValid()
+    @expectedFailureWindows # Windows doesn't have pthreads, need to port this test.
     def test_with_dwarf_and_run_command(self):
         """Test that expr will time out and allow other threads to run if it blocks."""
         self.buildDwarf()