Fix showing contact numbers of unknown type
Returning NULL for unknown types will result in the concatinated string to be NULL, which hides the phone number added to the label.
Fix it by always returning a valid string.
/cc @guido.gunther
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Returning NULL for unknown types will result in the concatinated string to be NULL, which hides the phone number added to the label.
Fix it by always returning a valid string.
/cc @guido.gunther