am f8c1f129: am e1d27154: am f87743e7: Merge "Prevent NullPointerException cases while using SipService."

* commit 'f8c1f1298ac3ede518c8d29eeb6719746c6afaf0':
  Prevent NullPointerException cases while using SipService.
tree: b4cd5d5758c486e7f9f94da3dbb8945268eddebf
  1. data/
  2. java/
  3. jni/