Request for review (XS): JDK-8011952: Missing ResourceMarks in TraceMethodHandles

[Krystal Mo]

Hi everybody,

Could I have a review for this small change, please?

Webrev: http://cr.openjdk.java.net/~kmo/8011952/webrev.00/
CR: http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=8011952

Description: (copied from CR)

There are some TraceMethodHandles logic that uses Symbol::as_C_string(), 
but miss putting a ResourceMark in the appropriate scope, triggering 
assertions in debug builds when using -XX:+TraceMethodHandles.

Testing:

Testing with JPRT.
Hand tested some programs using MethodHandles with VM flags: 
-XX:+TraceMethodHandles -XX:+Verbose, all of them hit assertion before 
change and pass after the change.

Thanks,
Kris