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Use NULL instead of 0 for pointers and memory allocation.

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malloc and realloc will return NULL pointer if it can't alloc memory.

MFC after:	4 weeks
This commit is contained in:
Marcelo Araujo 2016-04-15 02:14:11 +00:00
parent 69f2305587
commit 960536b69f
1 changed files with 3 additions and 3 deletions
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6
usr.sbin/fdformat/fdformat.c
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@ -95,7 +95,7 @@ verify_track(int fd, int track, int tracksize)
if (bufsz < tracksize)
buf = realloc(buf, bufsz = tracksize);
if (buf == 0)
if (buf == NULL)
errx(EX_UNAVAILABLE, "out of memory");
if (lseek (fd, (long) track * tracksize, 0) < 0)
rv = -1;
@ -205,7 +205,7 @@ main(int argc, char **argv)
if (stat(argv[optind], &sb) == -1 && errno == ENOENT) {
/* try prepending _PATH_DEV */
device = malloc(strlen(argv[optind]) + sizeof(_PATH_DEV) + 1);
if (device == 0)
if (device == NULL)
errx(EX_UNAVAILABLE, "out of memory");
strcpy(device, _PATH_DEV);
strcat(device, argv[optind]);
@ -252,7 +252,7 @@ main(int argc, char **argv)
if (format) {
getname(type, &name, &descr);
fdtp = get_fmt(format, type);
if (fdtp == 0)
if (fdtp == NULL)
errx(EX_USAGE,
"unknown format %d KB for drive type %s",
format, name);