message: Add optimize instruction to fuzz tests.
diff: @@ -91,6 +91,7 @@ enum INS {
  MOVE_COLUMN,
  SET_UNIQUE,
  IS_NULL,
  + OPTIMIZE_TABLE,
  COUNT
  };
  @@ -761,6 +762,15 @@ void parse_and_apply_instructions(std::string& in, const std::string& path, util
  t->swap_rows(row_ndx1, row_ndx2);
  }
  }
  + else if (instr == OPTIMIZE_TABLE && g.size() > 0) {
  + size_t table_ndx = get_next(s) % g.size();
  + TableRef t = g.get_table(table_ndx);
  + // Force creation of a string enum column
  + if (log) {
  + *log << "g.get_table(" << table_ndx << ")->optimize(true);\n";
  + }
  + g.get_table(table_ndx)->optimize(true);
  + }
  else if (instr == COMMIT) {
  if (log) {
  *log << "LangBindHelper::commit_and_continue_as_read(sg_w);\n";
  