[LLDB] Skip TestMultipleSlides.py on Windows (llvm#165604)

After the default PDB plugin changed to the native one (llvm#165363), this
test failed, because it uses the size of public symbols and the native
plugin sets the size to 0 (as PDB doesn't include this information
explicitly). A PDB was built because the final executable in that test
was linked with `-gdwarf`.

Author: Nerixyz

lldb/test/API/functionalities/multiple-slides/TestMultipleSlides.py

@@ -12,6 +12,10 @@
 class MultipleSlidesTestCase(TestBase):
     NO_DEBUG_INFO_TESTCASE = True
 
+    # The intermediate object main.o is compiled without debug info, but
+    # a.out is linked with `-gdwarf` on Windows. This creates a PDB.
+    # However, in the native PDB plugin, the symbols don't have a size.
+    @expectedFailureWindows
     def test_mulitple_slides(self):
         """Test that a binary can be slid multiple times correctly."""
         self.build()