Check for empty $addressPart can fail

[rintisch]

Is neither city nor zip is entered the check if (empty($addressPart)) fails because a white space makes $addressPart being not empty.

geocoding/Classes/Service/GeoService.php

Lines 81 to 88 in f8cfd7f

	foreach ([$street, $zip . ' ' . $city, $country] as $addressPart) {
	if (empty($addressPart)) {
	continue;
	}
	$addressParts[] = trim($addressPart);
	}
	$address = ltrim(implode(',', $addressParts), ',');

Would be a solution to check with strlen(trim($addressPart)) <= 0 instead.

Background:
Otherwise this can lead to two consecutive commas. As a result the request leads sometimes to ZERO_RESULTS.

Is the solution okay? Shall I make a PR?

[bmack]

Yes. Please go ahead.