RFR(XXS): 8086073: Fix PrintStubCode for empty StubCodeGenerator.

[Lois Foltan]

Looks good.
Lois

On 6/10/2015 2:46 AM, Lindenmaier, Goetz wrote:
> Hi,
>
> PrintStubCode runs into an assertion if a StubCodeGenerator that never generated
> a stub is deleted. This happens for ICacheStubGenerator on ppc, as we implement
> the flushing with inline assembly and don't generate a stub.
>
> The fix is to check for an empty list in the assertion.
>
> Please review and sponsor this tiny fix.
> http://cr.openjdk.java.net/~goetz/webrevs/8086073-PSC/webrev.01/
>
>
> Best regards and thanks,
>    Goetz.