NullPointerException at handleMessage(GSMPhone.java)

NullPointerException at
com.android.internal.telephony.gsm.GSMPhone.handleMessage(GSMPhone.java)
Failing to retrieved the IMSI number from SIM card could lead to
an exception. A null pointer check will prevent this.

Change-Id: I26760543484504c8d35215bfb1e8f1ae664aeade

1 files changed, 2 insertions, 1 deletions

diff --git a/telephony/java/com/android/internal/telephony/gsm/GSMPhone.java b/telephony/java/com/android/internal/telephony/gsm/GSMPhone.java
index 2bb7968..3d22441 100755
--- a/telephony/java/com/android/internal/telephony/gsm/GSMPhone.java
+++ b/telephony/java/com/android/internal/telephony/gsm/GSMPhone.java
@@ -1219,7 +1219,8 @@ public class GSMPhone extends PhoneBase {
                 // Check if this is a different SIM than the previous one. If so unset the
                 // voice mail number.
                 String imsi = getVmSimImsi();
-                if (imsi != null && !getSubscriberId().equals(imsi)) {
+                String imsiFromSIM = getSubscriberId();
+                if (imsi != null && imsiFromSIM != null && !imsiFromSIM.equals(imsi)) {
                     storeVoiceMailNumber(null);
                     setVmSimImsi(null);
                 }