hg: jdk/sandbox: 8175883: bytecode generated for the enhanced for loop may block memory garbage collecting

[chris.hegarty at oracle.com]

Changeset: e29ae57c6421
Author:    vromero
Date:      2017-11-20 17:07 -0500
URL:       http://hg.openjdk.java.net/jdk/sandbox/rev/e29ae57c6421

8175883: bytecode generated for the enhanced for loop may block memory garbage collecting
Reviewed-by: mcimadamore

! src/jdk.compiler/share/classes/com/sun/tools/javac/comp/Lower.java
! test/langtools/tools/javac/flow/tests/TestCaseForEach.java