Enable reading from a closed gbytes.Buffer

[davidhsingyuchen]

Summary

PR addresses #573. I thought about updating the test case to ensure that a closed buffer can be read, but I later thought that the test case might not exist in the first place if we enabled reading from a closed buffer when the Read was added (i.e., 8 years ago), so I decided to completely remove the test case.

Test

$ ginkgo -r -p
Running Suite: Gbytes Suite - D:\main\dev\davidhsingyuchen\gomega\gbytes
========================================================================
Random Seed: 1661405848

Will run 39 of 39 specs
Running in parallel across 11 processes
+++++++++++++++++++++++++++++++++++++++

Ran 39 of 39 Specs in 0.245 seconds
SUCCESS! -- 39 Passed | 0 Failed | 0 Pending | 0 Skipped


Ginkgo ran 1 suite in 3.3358401s
Test Suite Passed

[davidhsingyuchen]

Rebased against master to get the fix included in cb46517.

[onsi]

Thanks @davidhsingyuchen !

[davidhsingyuchen]

Hi @onsi, could you help cut a release? Thanks!

[onsi]

Done! This is out on v1.20.2 now.