uname,individual: fix improper printf usage

uname,awk: small code shrink

function                                             old     new   delta
uname_main                                           175     166      -9
nvalloc                                              167     157     -10
evaluate                                            6381    6370     -11
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 0/3 up/down: 0/-30)             Total: -30 bytes

1 files changed, 4 insertions, 4 deletions

diff --git a/editors/awk.c b/editors/awk.c
index cc5dc84b5..44b747b29 100644
--- a/editors/awk.c
+++ b/editors/awk.c
@@ -852,11 +852,11 @@ static var *nvalloc(int n)
 
         if (!g_cb) {
                 size = (n <= MINNVBLOCK) ? MINNVBLOCK : n;
-                g_cb = xmalloc(sizeof(nvblock) + size * sizeof(var));
+                g_cb = xzalloc(sizeof(nvblock) + size * sizeof(var));
                 g_cb->size = size;
                 g_cb->pos = g_cb->nv;
                 g_cb->prev = pb;
-                g_cb->next = NULL;
+                /*g_cb->next = NULL; - xzalloc did it */
                 if (pb) pb->next = g_cb;
         }
 
@@ -2028,9 +2028,9 @@ static var *exec_builtin(node *op, var *res)
                 if (i < 0) i = 0;
                 n = (nargs > 2) ? getvar_i(av[2]) : l-i;
                 if (n < 0) n = 0;
-                s = xmalloc(n+1);
+                s = xzalloc(n + 1);
                 strncpy(s, as[0]+i, n);
-                s[n] = '\0';
+                /*s[n] = '\0'; - xzalloc did it */
                 setvar_p(res, s);
                 break;