hg: jdk7/hotspot-rt/hotspot: 7006471: fix for 6988439 crashes when pending list lock is null

[coleen.phillimore at oracle.com]

Changeset: b03e6b4c7c75
Author:    coleenp
Date:      2010-12-14 15:10 -0500
URL:       http://hg.openjdk.java.net/jdk7/hotspot-rt/hotspot/rev/b03e6b4c7c75

7006471: fix for 6988439 crashes when pending list lock is null
Summary: missing null check in owns_pending_list_lock() because this can be called before pending_list_lock is initialized.
Reviewed-by: never, kvn

! src/share/vm/oops/instanceRefKlass.cpp