Merge pull request #2251 from brentdax/xfail-xml-on-master

XFAIL TestXMLDocument.test_validation_failure() (on master)

Author: beccadax

TestFoundation/TestXMLDocument.swift

@@ -26,7 +26,8 @@ class TestXMLDocument : LoopbackServerTest {
             ("test_prefixes", test_prefixes),
             /* ⚠️ */ ("test_validation_success", testExpectedToFail(test_validation_success,
             /* ⚠️ */     #"<https://bugs.swift.org/browse/SR-10643> Could not build URI for external subset "http://127.0.0.1:-2/DTDs/PropertyList-1.0.dtd""#)),
-            ("test_validation_failure", test_validation_failure),
+            /* ⚠️ */ ("test_validation_failure", testExpectedToFail(test_validation_failure,
+            /* ⚠️ */     "<https://bugs.swift.org/browse/SR-10643> XCTAssert in last catch block fails")),
             ("test_dtd", test_dtd),
             ("test_documentWithDTD", test_documentWithDTD),
             ("test_dtd_attributes", test_dtd_attributes),