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Don't use 0 as null pointer constant, part 1

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Use NULL instead of 0, for clarity.  Except in pointer comparisons;
leave that to the next two commits.
This commit is contained in:
Markus Armbruster 2009-03-22 18:50:43 +01:00
parent a2ed975ec2
commit 615681ce16
51 changed files with 107 additions and 100 deletions
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8
src/lib/commands/skyw.c
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@ -68,7 +68,7 @@ skyw(void)
if (!snxtsct(&nstr, player->argp[1]))
return RET_SYN;
for (i = 0; i < TSIZE; i++)
list[i] = 0;
list[i] = NULL;
skyp = malloc(sizeof(*skyp));
snxtitem_all(&ni, EF_PLANE);
while (nxtitem(&ni, &skyp->s_sat)) {
@ -131,20 +131,20 @@ static int
showsat(struct sky **skypp, int x, int y)
{
struct sky *skyp;
struct sky *todelete = 0;
struct sky *todelete = NULL;
struct sky **prev;
struct plchrstr *pcp;
char *name;
int nsat = 0;
prev = 0;
prev = NULL;
skyp = *skypp;
prev = skypp;
do {
/* we delete it, we free it. */
if (todelete) {
free(todelete);
todelete = 0;
todelete = NULL;
}
if (skyp->s_sat.pln_x != x || skyp->s_sat.pln_y != y) {
prev = &(*prev)->s_next;