go/types: remove spurious quotes around package name in diagnostic message

[eikemeier]

When you have a type error involving a type from a package whose name is used by multiple packages, spurious quotes are added around the package name.

Example:

package main

import (
	"golang.org/x/oauth2"
	goauth2 "google.golang.org/api/oauth2/v2"
)

func main() {
	_, _ = goauth2.NewService(nil)

	_ = oauth2.StaticTokenSource(oauth2.Token{})
}

does not build with the message

./main.go:11:31: cannot use oauth2.Token{} (value of type "golang.org/x/oauth2".Token) as *"golang.org/x/oauth2".Token value in argument to oauth2.StaticTokenSource

it is expected to not build, but the quotes around “"golang.org/x/oauth2"” are unexpected.

[gopherbot]

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[gopherbot]

Message from Gopher Robot:

Patch Set 1:

(1 comment)

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Patch Set 1:

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Message from Robert Findley:

Patch Set 1: Code-Review+1

(1 comment)

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Message from Robert Findley:

Patch Set 1: Commit-Queue+1

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Message from Go LUCI:

Patch Set 1:

Dry run: CV is trying the patch.

Bot data: {"action":"start","triggered_at":"2025-02-03T14:50:24Z","revision":"6f04ef3d19ee927677d1a1e5232653c52ffbe018"}

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[gopherbot]

Message from Robert Findley:

Patch Set 1: -Commit-Queue

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[gopherbot]

Message from Go LUCI:

Patch Set 1:

This CL has failed the run. Reason:

Tryjob golang/try/gotip-linux-386 has failed with summary (view all results):

---

• go on master (change 646135)

Build or test failure, click here for results.

To reproduce, try gomote repro 8723945534108451073.

Additional links for debugging:

• Output for go tool dist test -json [shard 1]
• Output for go tool dist test -json [shard 4]

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Message from Go LUCI:

Patch Set 1: LUCI-TryBot-Result-1

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Message from Robert Findley:

Patch Set 1:

(1 comment)

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Message from Robert Griesemer:

Patch Set 1:

(1 comment)

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Message from Ian Lance Taylor:

Patch Set 1:

(2 comments)

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