Handle IllegalStateExceptions possible from EmergencyNumber APIs.

The emergency number APIs can throw IllegalStateExceptions in rare
cases where Telephony is not available; handling those exceptions to
ensure com.android.phone doesn't crash.

Test: Run telephony unit tests.
Bug: 134100020
Fixes: 152231444
Merged-In: I8b24f943f6146db45dec8ef23e345570e1f1d23e
Change-Id: I8b24f943f6146db45dec8ef23e345570e1f1d23e
(cherry picked from commit de54ec5be90d9ed42442d7a17148d186284466ac)
diff --git a/src/com/android/phone/EmergencyDialer.java b/src/com/android/phone/EmergencyDialer.java
index c6bac02..183742e 100644
--- a/src/com/android/phone/EmergencyDialer.java
+++ b/src/com/android/phone/EmergencyDialer.java
@@ -719,8 +719,12 @@
             isEmergencyNumber = true;
             phoneToMakeCall = mShortcutViewConfig.getPhoneInfo();
         } else {
-            isEmergencyNumber = getSystemService(TelephonyManager.class)
-                    .isEmergencyNumber(mLastNumber);
+            try {
+                isEmergencyNumber = getSystemService(TelephonyManager.class)
+                        .isEmergencyNumber(mLastNumber);
+            } catch (IllegalStateException ise) {
+                isEmergencyNumber = false;
+            }
         }
 
         if (isEmergencyNumber) {