Merge pull request #12119 from slavapestov/metadata-asan-test-fix

Fix ASAN failure in runtime metadata unit tests
diff --git a/unittests/runtime/Metadata.cpp b/unittests/runtime/Metadata.cpp
index b4c36bb..97679b1 100644
--- a/unittests/runtime/Metadata.cpp
+++ b/unittests/runtime/Metadata.cpp
@@ -182,7 +182,7 @@
       metadataWords[2] = argsWords[0];
       return metadata;
     },
-    3 * sizeof(void*), // metadata size
+    2 * sizeof(void*), // metadata size
     1, // num arguments
     0, // address point
     {} // private data