Telephony: Initialize GsmCellLocation class members properly

Default values for class members mLac, mCid, mPsc would be 0.
Initialize these variables with -1 as 0 is considered as valid value.

CRs-Fixed: 406479
Change-Id: Idb3d1737c7101b97a90eab3dc7436ee1806d0bc4
diff --git a/telephony/java/android/telephony/gsm/GsmCellLocation.java b/telephony/java/android/telephony/gsm/GsmCellLocation.java
index 313bc82..a3889b2 100644
--- a/telephony/java/android/telephony/gsm/GsmCellLocation.java
+++ b/telephony/java/android/telephony/gsm/GsmCellLocation.java
@@ -40,9 +40,9 @@
      * Initialize the object from a bundle.
      */
     public GsmCellLocation(Bundle bundle) {
-        mLac = bundle.getInt("lac", mLac);
-        mCid = bundle.getInt("cid", mCid);
-        mPsc = bundle.getInt("psc", mPsc);
+        mLac = bundle.getInt("lac", -1);
+        mCid = bundle.getInt("cid", -1);
+        mPsc = bundle.getInt("psc", -1);
     }
 
     /**