hg: panama/dev: Fix build error due to utility method being used in non-assert scenario

[razvan.a.lupusoru at intel.com]

Changeset: 5085ffca835f
Author:    rlupusoru
Date:      2018-01-19 14:54 -0800
URL:       http://hg.openjdk.java.net/panama/dev/rev/5085ffca835f

Fix build error due to utility method being used in non-assert scenario

! src/hotspot/share/opto/library_call.cpp