Avoid NPE when callers send null selection args.

                        "only updates, deletes, and asserts can have selections");

            }

            mSelection = selection;

            if (selectionArgs == null) {

                mSelectionArgs = null;

            } else {

                mSelectionArgs = new String[selectionArgs.length];

                System.arraycopy(selectionArgs, 0, mSelectionArgs, 0, selectionArgs.length);

            }

            return this;

        }