Prevent crash

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

@@ -1448,10 +1448,16 @@ public class FragmentCompose extends FragmentBase {
         etTo.setOnItemClickListener(new AdapterView.OnItemClickListener() {
             @Override
             public void onItemClick(AdapterView<?> adapterView, View view, int position, long id) {
+                try {
                     Cursor cursor = (Cursor) adapterView.getAdapter().getItem(position);
+                    if (cursor != null && cursor.getCount() > 0) {
                         int colEmail = cursor.getColumnIndex("email");
                         selectIdentityForEmail(colEmail < 0 ? null : cursor.getString(colEmail));
                     }
+                } catch (Throwable ex) {
+                    Log.e(ex);
+                }
+            }
         });
 
         grpAddresses.setVisibility(cc_bcc ? View.VISIBLE : View.GONE);
@@ -7482,9 +7488,11 @@ public class FragmentCompose extends FragmentBase {
                     .setPositiveButton(android.R.string.ok, new DialogInterface.OnClickListener() {
                         @Override
                         public void onClick(DialogInterface dialog, int which) {
+                            try {
                                 int target = spTarget.getSelectedItemPosition();
                                 Cursor cursor = (Cursor) spGroup.getSelectedItem();
-                            if (target != INVALID_POSITION && cursor != null) {
+                                if (target != INVALID_POSITION &&
+                                        cursor != null && cursor.getCount() > 0) {
                                     long group = cursor.getLong(0);
                                     String name = cursor.getString(1);
 
@@ -7498,6 +7506,9 @@ public class FragmentCompose extends FragmentBase {
                                     sendResult(RESULT_OK);
                                 } else
                                     sendResult(RESULT_CANCELED);
+                            } catch (Throwable ex) {
+                                Log.e(ex);
+                            }
                         }
                     })
                     .setNegativeButton(android.R.string.cancel, null)