Fix GZIPInputStream ctor leaking an un-end()ed Inflater when it throws.

Prior to this fix, when readHeader(in) threw an Exception,
the Inflater constructed a couple lines above leaked without
its end() method having been called. This means that the
Inflater relied on finalization alone, which is not reliable,
to call end() and thus clear its zsRef.

When StrictMode.DETECT_VM_CLOSABLE_LEAKS is enabled, this
triggered a strict mode error during finalization.

This CL fixes the code to end() the Inflater if readHeader()
throws an Exception (on equivalently, RuntimeException | IOException).

Test: The added test fails before this CL ("Unreleased resources found
      in test", found by ResourceLeakageDetector) but passes after it.
Test: When running the test method separately (without the
      ResourceLeakageDetector) through Android Studio, with surrounding
      code (not part of this CL) setting StrictMode.DETECT_VM_CLOSABLE_LEAKS
      and triggering finalization, a StrictMode warning / stacktrace
      shows up in logcat before but not after this CL.
Bug: 113790020

Change-Id: Ie7d5b2e2101d57232e3cc76f74ed7be7860929e1

0 files changed, 0 insertions, 0 deletions