RFR(T) 8248886 InstanceKlass::initialize_impl crashes with -XX:-UsePerfData after JDK-8246019

[Ioi Lam]

Hi, here's a quick fix for a crash that happens with "java 
-XX:-UsePerfData -version"

$ hg diff
diff -r d90de88ba4d0 src/hotspot/share/oops/instanceKlass.cpp
--- a/src/hotspot/share/oops/instanceKlass.cpp    Mon Jul 06 15:14:44 
2020 -0700
+++ b/src/hotspot/share/oops/instanceKlass.cpp    Mon Jul 06 17:00:52 
2020 -0700
@@ -1169,7 +1169,9 @@
        call_class_initializer(THREAD);
      } else {
        // The elapsed time is so small it's not worth counting.
-      ClassLoader::perf_classes_inited()->inc();
+      if (UsePerfData) {
+        ClassLoader::perf_classes_inited()->inc();
+      }
        call_class_initializer(THREAD);
      }
    }


Thanks
- Ioi