Print correctly-scrubbed number of binder proxies

currentValue is the version that doesn't include high bits dedicated
to warning/error flags. It's computed in both branches of an if-else
so let's unify it to avoid mistakes.

Fixes the following log message seen in the wild:

> Too many binder proxy objects sent to uid 1000 from uid 10285
> (1073747824 proxies held)

Bug: 411022463
Bug: 298263955
Test: WMShellUnitTests (see linked bug)
Flag: EXEMPT printing without the flag now
Change-Id: I94dc7263f5daff26b5ad730b82b024675389c20e