hg: jdk/jdk: 8211071: unpack.cpp fails to compile with statement has no effect [-Werror=unused-value]

[roman at kennke.org]

Changeset: 02421ca2cc85
Author:    rkennke
Date:      2018-10-01 17:47 +0200
URL:       http://hg.openjdk.java.net/jdk/jdk/rev/02421ca2cc85

8211071: unpack.cpp fails to compile with statement has no effect [-Werror=unused-value]
Reviewed-by: ihse, clanger

! src/jdk.pack/share/native/common-unpack/unpack.cpp