[release-branch.go1.16] cmd/go/internal/modload: don't query when fixing canonical versions
If a canonical version is passed to fixVersion when loading the main
go.mod and that version don't match the module path's major version
suffix, don't call Query.
Query doesn't return a useful error in this case when the path is
malformed, for example, when it doens't have a dot in the first path
element. It's better to report the major version mismatch error.
Fixes #44496
Change-Id: I97b1f64aee894fa0db6fb637aa03a51357ee782c
Reviewed-on: https://go-review.googlesource.com/c/go/+/296590
Trust: Jay Conrod <jayconrod@google.com>
Run-TryBot: Jay Conrod <jayconrod@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Bryan C. Mills <bcmills@google.com>
(cherry picked from commit
5fafc0bbd4819578e58e5b9163981b0074ab0b01)
Reviewed-on: https://go-review.googlesource.com/c/go/+/297989
Reviewed-by: Dmitri Shuralyov <dmitshur@golang.org>