git: openjdk/mobile: 8237753: 32-bit builds are broken after JDK-823059

[duke]

Changeset: 6c4e2e70
Author:    Patricio Chilano Mateo <pchilanomate at openjdk.org>
Date:      2020-01-23 04:54:15 +0000
URL:       https://git.openjdk.java.net/mobile/commit/6c4e2e70

8237753: 32-bit builds are broken after JDK-823059

Changed _pending_threads to be 32 bits instead of 64

Reviewed-by: dholmes

! src/hotspot/share/runtime/handshake.cpp