Add a unit test for r248341.

llvm-svn: 248348
diff --git a/llvm/unittests/IR/MetadataTest.cpp b/llvm/unittests/IR/MetadataTest.cpp
index 661f965..c1a212a 100644
--- a/llvm/unittests/IR/MetadataTest.cpp
+++ b/llvm/unittests/IR/MetadataTest.cpp
@@ -1303,7 +1303,7 @@
   MDTuple *Subprograms = getTuple();
   MDTuple *GlobalVariables = getTuple();
   MDTuple *ImportedEntities = getTuple();
-  uint64_t DWOId = 0xc0ffee;
+  uint64_t DWOId = 0x10000000c0ffee;
   auto *N = DICompileUnit::getDistinct(
       Context, SourceLanguage, File, Producer, IsOptimized, Flags,
       RuntimeVersion, SplitDebugFilename, EmissionKind, EnumTypes,