Fix race condition which caused extra ImsPhone object to be created.

Extra ImsPhone object was created if IMS service was available when
voice RAT was changing. Later this object was replaced inside GSM or
CDMA phone object, but it proceed receiving updates from IMS service.

Bug: 19986577
Change-Id: I2907569fc0270e58a37725d530da0a60ead4215e
4 files changed
tree: 0d09ea30365a57e30c9ad41e0157cdd92a1aa699
  3. README.txt
  4. src/
  5. tests/
  6. tools/