Subzero. ARM32. Fixes infinite loop during address mode formation.

BUG= https://bugs.chromium.org/p/nativeclient/issues/detail?id=4076
R=kschimpf@google.com, sehr@chromium.org, stichnot@chromium.org

Review URL: https://codereview.chromium.org/1609753002 .
1 file changed