janitorial: modernize error detection #233
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Reading the documentation of `os.IsNotExist` and similar functions (see https://golang.org/pkg/os/#IsNotExist), we learn that ``` This function predates errors.Is. It only supports errors returned by the os package. New code should use errors.Is(err, os.ErrNotExist). ``` ghw uses these functions but sparsely, so we take the chance in this PR to modernize the codebase. No intended changes in behaviour. Signed-off-by: Francesco Romani <fromani@redhat.com>
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Reading the documentation of
os.IsNotExistand similar functions(see https://golang.org/pkg/os/#IsNotExist), we learn that
ghw uses these functions but sparsely, so we take the chance
in this PR to modernize the codebase.
No intended changes in behaviour.
Signed-off-by: Francesco Romani fromani@redhat.com