RFR(XS): 8194741: CDS broken due to 8194741

[Erik Österlund]

Hi,

I accidentally broke CDS with 8194741, which affects a bunch of tier 2 
CDS tests.
The problem is trivial: I missed a branch condition where the resolved 
references object is null that should have gone to the else bit, but did 
not after my change.
Sorry for breaking this - I seem to have mixed up my test run results 
from tier 1-5, and after that only ran an extra tier 1 sanity check 
before checking in which did not catch this.

I have run the failing tests locally to verify they work now (and they 
do), and am running tier 1-2 again before meanwhile.

Webrev:
http://cr.openjdk.java.net/~eosterlund/8195107/webrev.00/

Bug:
https://bugs.openjdk.java.net/browse/JDK-8195107

Here is the original webrev of 8194741 where I messed up the condition 
in constantPool.cpp:330:
http://cr.openjdk.java.net/~eosterlund/8194741/webrev.00/

Thanks,
/Erik