Make the Edit and Delete links actually appear if you only have one

Address Book (I presume this was a typo)

src/addressbook.php

@@ -264,7 +264,7 @@ if ($showaddrlist) {
     
             /* New table header for each backend */
             if($prevbackend != $row['backend']) {
-                if($prevbackend >= 0) {
+                if($prevbackend < 0) {
                     echo '<TR><TD COLSPAN=5 ALIGN=center>' . "\n" .
                          '<INPUT TYPE=submit NAME=editaddr VALUE="' . 
                          _("Edit selected") . "\">\n" .