[hackers] [scc] [cc2] Initialize left and right pointers in constnode() || Roberto E. Vargas Caballero

[git]

commit db8cf76a3a055a1bc065c842516d7193147ba6e3
Author:     Roberto E. Vargas Caballero <k...@shike2.com>
AuthorDate: Wed Sep 14 14:57:16 2016 +0200
Commit:     Roberto E. Vargas Caballero <k...@shike2.com>
CommitDate: Wed Sep 14 15:32:23 2016 +0200

    [cc2] Initialize left and right pointers in constnode()
    
    The code follows these pointers in a few cases without looking the op,
    so it is better to have them initialized.

diff --git a/cc2/code.c b/cc2/code.c
index 5a1170f..68172b5 100644
--- a/cc2/code.c
+++ b/cc2/code.c
@@ -74,8 +74,6 @@ label2node(Node *np, Symbol *sym)
                sym = newlabel();
        if (!np)
                np = newnode(OLABEL);
-       else
-               memset(np, 0, sizeof(np));
        np->op = OLABEL;
        np->u.sym = sym;
 
@@ -87,6 +85,8 @@ constnode(Node *np, TUINT n, Type *tp)
 {
        if (!np)
                np = newnode(OCONST);
+       np->left = NULL;
+       np->right = NULL;
        np->type = *tp;
        np->u.i = n;
        return np;