Revert "Dialer: fix NPE in ReverseLookupService.doLookup"

This reverts commit 362b1b974937a05c7b131ba88892da05751d86d6.
Dialer: fix NPE in ReverseLookupService.doLookup

-also little fix in coding style

Change-Id: I333c390257685fd23e1f212a95f184be0b39f0bf