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[ticket/13470] Fix non-empty username array if no usernames are given
PHPBB3-13470
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@ -40,7 +40,7 @@ class acp_email
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$error = array();
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$usernames = request_var('usernames', '', true);
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$usernames = explode("\n", $usernames);
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$usernames = (!empty($usernames)) ? explode("\n", $usernames) : array();
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$group_id = request_var('g', 0);
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$subject = utf8_normalize_nfc(request_var('subject', '', true));
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$message = utf8_normalize_nfc(request_var('message', '', true));
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