Bug 1029313 - [Dialer][DSDS] With 2 SIMs; The matching result disappears after typing in the last correct digit when dialing

This lines allow to hide suggestion bar if we haven't introduced the complete number on the dialer.

contact.tel[firstMatch].value == self._phoneNumber --> See if the number on the dialer is the number of the contact.

self._lastSearch != self._phoneNumber.substring(0,self._phoneNumber.length-1) --> See if we haven't already inserted all the number. (If we insert all numbers on the dialer _lastSearch is the same that _phoneNumber minus the last number)

¿Do you know any alternative?