message: whitespace clean up (and fix rebase.)
diff: @@ -67,7 +67,6 @@ P W A
  P F A
  */
  LogicalAggregate* CommonAggregateOptimizer::find_logical_aggregate(vector<Expression*>& expressions, LogicalOperator& projection) {
  -
  LogicalOperator* node = &projection;
  for (auto& expression : projection.expressions) {
  @@ -103,7 +102,6 @@ LogicalAggregate* CommonAggregateOptimizer::find_logical_aggregate(vector<Expres
  void CommonAggregateOptimizer::find_bound_references(Expression& expression, const LogicalAggregate& aggregate, aggregate_to_bound_ref_map_t& aggregate_to_projection_map, size_t& nr_of_groups) {
  if (expression.GetExpressionClass() == ExpressionClass::BOUND_REF) {
  -
  auto column_index = &(static_cast<BoundExpression&>(expression).index);
  if (*column_index >= nr_of_groups) {
  