cmd/compile/internal/abi: fix ComputePadding
Fixes the ComputePadding calculation to take into account
the padding added for the current offset. This fixes an issue
where padding can be added incorrectly for certain structs.
Related: https://github.com/go-delve/delve/issues/3923
Fixes #72053
Change-Id: I277629799168c6b44bc9ed03df4345e0318064ce
GitHub-Last-Rev:
9478b29a137e20421ad348bb93a54406b1977008
GitHub-Pull-Request: golang/go#72805
Reviewed-on: https://go-review.googlesource.com/c/go/+/656736
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
Reviewed-by: Keith Randall <khr@google.com>