hg: amber/amber: fixing regression unit tests

[vicente.romero at oracle.com]

Changeset: 11750f5c28cb
Author:    vromero
Date:      2018-04-30 09:46 -0700
URL:       http://hg.openjdk.java.net/amber/amber/rev/11750f5c28cb

fixing regression unit tests

! src/java.base/share/classes/java/lang/invoke/constant/ConstantDescs.java
! test/jdk/java/lang/invoke/constant/MethodTypeRefTest.java