Function stdlibImportcfgFile creates a temporary directory and a file in
it, which are never deleted.
The easiest to fix this (without creating the file unnecessarily, or
creating it multiple times) is to add a global tmpDir and use it in
stdlibImportcfgFile.
Change-Id: Ia971b4478d9e0fa7c3a9b4c66e13fd5a4af9cbaa
Reviewed-on: https://go-review.googlesource.com/c/go/+/610818 Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Auto-Submit: Ian Lance Taylor <iant@google.com> Reviewed-by: Ian Lance Taylor <iant@google.com>