hg: valhalla/valhalla: [lworld] Fixed SigEntry::create_symbol because SignatureStream does not handle signature without return type anymore

[tobias.hartmann at oracle.com]

Changeset: 4c7f757f2319
Author:    thartmann
Date:      2020-02-20 17:58 +0100
URL:       https://hg.openjdk.java.net/valhalla/valhalla/rev/4c7f757f2319

[lworld] Fixed SigEntry::create_symbol because SignatureStream does not handle signature without return type anymore

! src/hotspot/share/runtime/signature.cpp