Backup, Decl,Type parsing enum,structs etc.

expr.c

@@ -2,7 +2,6 @@
 function Expr *
 expr_new(Parser *p, Expr_Kind kind, Token *token){
   Expr *expr = arena_push_struct(&p->main_arena, Expr);
-  memory_zero(expr, sizeof(Expr));
   expr->kind = kind;
   expr->token = token;
   return expr;