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The VISCA over UDP driver was unconditionally dereferencing an empty list when the lookup_host callback was triggered. When a hostname was resolved there was no problem, but on a lookup failure the addresses list is empty, and the function segfaulted. Fix by checking to see if the list isn't empty before dereferencing it. Signed-off-by: Grant Likely <[email protected]>
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The VISCA over UDP driver was unconditionally dereferencing an empty list when the lookup_host callback was triggered. When a hostname was resolved there was no problem, but on a lookup failure the addresses list is empty, and the function segfaulted. Fix by checking to see if the list isn't empty before dereferencing it.