[ORC] Try to skip unsupported targets in reoptimization test.

Many build bots are getting failures because of this:
https://lab.llvm.org/buildbot/#/builders/140/builds/8600
https://lab.llvm.org/buildbot/#/builders/137/builds/6824
https://lab.llvm.org/buildbot/#/builders/140/builds/8600

Author: sunho

llvm/unittests/ExecutionEngine/Orc/JITLinkRedirectionManagerTest.cpp

@@ -32,15 +32,19 @@ class JITLinkRedirectionManagerTest : public testing::Test {
       consumeError(JTMB.takeError());
       GTEST_SKIP();
     }
+    auto DLOrErr = JTMB->getDefaultDataLayoutForTarget();
+    if (!DLOrErr) {
+      consumeError(DLOrErr.takeError());
+      GTEST_SKIP();
+    }
 
     ES = std::make_unique<ExecutionSession>(
         std::make_unique<UnsupportedExecutorProcessControl>(
             nullptr, nullptr, JTMB->getTargetTriple().getTriple()));
     JD = &ES->createBareJITDylib("main");
     ObjLinkingLayer = std::make_unique<ObjectLinkingLayer>(
         *ES, std::make_unique<InProcessMemoryManager>(16384));
-    DL = std::make_unique<DataLayout>(
-        cantFail(JTMB->getDefaultDataLayoutForTarget()));
+    DL = std::make_unique<DataLayout>(std::move(*DLOrErr));
   }
   JITDylib *JD{nullptr};
   std::unique_ptr<ExecutionSession> ES;