netboot: fix swallowed errors in ConfigureInterface - #586
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The deferred rt.Close() handler checked the wrong variable (err, the named return, instead of cerr). Any error returned from the function body was overwritten by the (almost always nil) rt.Close() result. Override the named return error only when it is nil. Signed-off-by: Michael Pesa <michael.pesa@icloud.com>
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Is this something we can unit test? |
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The deferred
rt.Close()handler checked the wrong variable (err, the named return, instead ofcerr). Any error returned from the function body was overwritten by the (almost alwaysnil)rt.Close()result. Override the named return error only when it isnil.