Fix NumberFormatException in SipEditor when saving port number

When saving sip account with port number which has out of range integer
value, NumberFormatException is thrown. Fix issue to handle exception
properly.

Bug: 35300619
Test: Manual
Change-Id: Ic5b9c9126c50ffd2ff8e4bbe3f1d1bc38f8cca5a
1 file changed