memstats.heap_alloc is 100% a duplicate and unnecessary copy of
memstats.alloc which exists because MemStats used to be populated from
memstats via a memmove.
Change-Id: I995489f61be39786e573b8494a8ab6d4ea8bed9c
Reviewed-on: https://go-review.googlesource.com/c/go/+/246975
Run-TryBot: Michael Knyszek <mknyszek@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Trust: Michael Knyszek <mknyszek@google.com> Reviewed-by: Michael Pratt <mpratt@google.com>