Prevent crash

app/src/main/java/eu/faircode/email/ServiceSynchronize.java

@@ -2577,6 +2577,7 @@ public class ServiceSynchronize extends ServiceBase implements SharedPreferences
         }
 
         private void post(Bundle command, ConnectionHelper.NetworkState networkState, List<TupleAccountState> accountStates) {
+            try {
                 if (!running) {
                     Log.i("### not running");
                     return;
@@ -2615,6 +2616,26 @@ public class ServiceSynchronize extends ServiceBase implements SharedPreferences
                             accountState));
 
                 postValue(result);
+            } catch (Throwable ex) {
+                Log.e(ex);
+                /*
+                    java.lang.NullPointerException: Attempt to invoke virtual method 'java.lang.String android.content.Context.getPackageName()' on a null object reference
+                            at androidx.preference.PreferenceManager.getDefaultSharedPreferencesName(PreferenceManager:124)
+                            at androidx.preference.PreferenceManager.getDefaultSharedPreferences(PreferenceManager:119)
+                            at eu.faircode.email.ServiceSynchronize$MediatorState.post(ServiceSynchronize:2596)
+                            at eu.faircode.email.ServiceSynchronize$MediatorState.post(ServiceSynchronize:2569)
+                            at eu.faircode.email.ServiceSynchronize$MediatorState.access$400(ServiceSynchronize:2546)
+                            at eu.faircode.email.ServiceSynchronize$3.onChanged(ServiceSynchronize:219)
+                            at eu.faircode.email.ServiceSynchronize$3.onChanged(ServiceSynchronize:216)
+                            at androidx.lifecycle.MediatorLiveData$Source.onChanged(MediatorLiveData:152)
+                            at androidx.lifecycle.LiveData.considerNotify(LiveData:133)
+                            at androidx.lifecycle.LiveData.dispatchingValue(LiveData:151)
+                            at androidx.lifecycle.LiveData.setValue(LiveData:309)
+                            at androidx.lifecycle.MutableLiveData.setValue(MutableLiveData:50)
+                            at androidx.lifecycle.LiveData$1.run(LiveData:93)
+                            at android.os.Handler.handleCallback(Handler.java:761)
+                 */
+            }
         }
     }