Prevent crash

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

@@ -2524,6 +2524,7 @@ public class FragmentCompose extends FragmentBase {
                     if (cursor != null && cursor.moveToFirst()) {
                         int colEmail = cursor.getColumnIndex(ContactsContract.CommonDataKinds.Email.ADDRESS);
                         int colName = cursor.getColumnIndex(ContactsContract.Contacts.DISPLAY_NAME);
+                        if (colEmail >= 0 && colName >= 0) {
                             String email = MessageHelper.sanitizeEmail(cursor.getString(colEmail));
                             String name = cursor.getString(colName);
 
@@ -2563,6 +2564,7 @@ public class FragmentCompose extends FragmentBase {
                             }
                         }
                     }
+                }
 
                 return draft;
             }