cmd/go/internal/modload: avoid calling strings.HasPrefix twice in *MainModuleSet.DirImportPath

[callthingsoff]

Since TrimPrefix uses HasPrefix internally.

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Message from Gopher Robot:

Patch Set 1:

(1 comment)

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Message from Jes Cok:

Patch Set 1:

(1 comment)

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Message from Jes Cok:

Patch Set 4: Run-TryBot+1

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Message from Gopher Robot:

Patch Set 4:

(1 comment)

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Message from Gopher Robot:

Patch Set 4: TryBot-Result+1

(1 comment)

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Message from Bryan Mills:

Patch Set 4: Auto-Submit+1 Code-Review+2 Commit-Queue+1

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Message from Go LUCI:

Patch Set 4:

Dry run: CV is trying the patch.

Bot data: {"action":"start","triggered_at":"2023-11-07T22:21:07Z","revision":"350630de8f7a9e374dafe9ae6cad4252d8a2458b"}

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Message from Bryan Mills:

Patch Set 4: -Commit-Queue

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Message from Go LUCI:

Patch Set 4:

This CL has failed the run. Reason:

Tryjob golang/try/gotip-wasip1-wasm_wasmtime has failed with summary (view all results):

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FAILURE

• go on master (change 539096)

error: shard 1: failed to run "go tool dist test -json": exit status 1
shard 2: failed to run "go tool dist test -json": exit status 1
shard 3: failed to run "go tool dist test -json": exit status 1
shard 4: failed to run "go tool dist test -json": exit status 1

• shard 1 "go tool dist test -json" (combined output)
• shard 1 build page
• shard 2 "go tool dist test -json" (combined output)
• shard 2 build page
• shard 3 "go tool dist test -json" (combined output)
• shard 3 build page
• shard 4 "go tool dist test -json" (combined output)
• shard 4 build page

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Message from Go LUCI:

Patch Set 4: LUCI-TryBot-Result-1

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This PR is being closed because golang.org/cl/539096 has been merged.