hg: jdk9/hs/hotspot: 8166501: compilation error in stackwalk.cpp on some gccs

[brent.christian at oracle.com]

Changeset: 15ae86213202
Author:    bchristi
Date:      2016-09-22 10:24 -0700
URL:       http://hg.openjdk.java.net/jdk9/hs/hotspot/rev/15ae86213202

8166501: compilation error in stackwalk.cpp on some gccs
Reviewed-by: coleenp

! src/share/vm/prims/stackwalk.cpp