os: ReadFile: don't check for re-allocation in the first iteration
At the beginning of the for-loop iteration cap(data) > len(data) always.
Therefore, in the first iteration, this check becomes unnecessary.
we can move this check to after the read operation.
Change-Id: I205e4a842ced74f31124b45a39b70523b56ad840
GitHub-Last-Rev:
2fdf25dff2e9984d3a8f8e5e612ea802c88e88a1
GitHub-Pull-Request: golang/go#60473
Reviewed-on: https://go-review.googlesource.com/c/go/+/498915
Reviewed-by: Rob Pike <r@golang.org>
Reviewed-by: Bryan Mills <bcmills@google.com>
Run-TryBot: Rob Pike <r@golang.org>
TryBot-Result: Gopher Robot <gobot@golang.org>
Run-TryBot: Ian Lance Taylor <iant@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>