Phone : fix FC when call incoming or dialing

Cauese by when some 3rd software restore the contacts,
the big pic of avatar will not be set, and the code did not check here,
so casuse an exception, but try...catch only catch IOException not NullPointerException,
then Force Close.

An other problem is the sim card can not show the incoming number, then when get the avatar,
will be Force Close.Fix this problem <with out test>.

Patch set 1 : remove number checking null

Change-Id: I363ad3fcfad0111c306b6c5c541666db593a58ae