Prevent sign extension in UsimPhoneBookManager

When performing a logical OR on a byte value, make sure to truncate its
value to prevent possible sign extension when it is converted to 32-bit.

Change-Id: I7bdfded32cec3e8a5f6b5c45316b2af5ab9471d1

telephony/java/com/android/internal/telephony/gsm/UsimPhoneBookManager.java

@@ -409,7 +409,7 @@ public class UsimPhoneBookManager extends Handler implements IccConstants {
                     case USIM_EFIAP_TAG:
                     case USIM_EFSNE_TAG:
                         data = tlv.getData();
-                        int efid = data[0] << 8 | data[1];
+                        int efid = ((data[0] & 0xFF) << 8) | (data[1] & 0xFF);
                         val.put(tag, efid);
                         break;
                 }