RFR[trivial]: 8226793: Replace OopStorage dup_name with os::strdup

[Thomas Schatzl]

Hi,

On Wed, 2019-07-03 at 21:46 -0400, Kim Barrett wrote:
> Please review this trivial change to OopStorage's name handling.
> Rather than bespoke duplicatation (with dup_name unintentionally
> having external linkage), it should just be using os::strdup.
> 
> CR:
> https://bugs.openjdk.java.net/browse/JDK-8226793
> 
> Webrev:
> http://cr.openjdk.java.net/~kbarrett/8226793/open.00/
> 
> Testing:
> mach5 tier1
> 

  looks good and trivial.

Thomas