Tighten recipient check
Tighten recipient check

When we send a message, the recips in the UI can be empty when the
user manually types in a number and hits send. prepareForSave() then
turns those working numbers into real recips. Add an extra test
for that situation before complaining of different recips.
Bug 3066322

Change-Id: I4aaa86138bc9aa817848b24cc5aac1c7718fe735

bmaupin/android-sms-plus