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Use NULL instead of 0 for pointers.

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fopen(3) will return NULL in case it cannot open the STREAM.

MFC after:	2 weeks.
This commit is contained in:
Marcelo Araujo 2016-04-18 07:09:34 +00:00
parent 26ac9660a4
commit 1b56693f8b
1 changed files with 1 additions and 1 deletions
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2
usr.bin/m4/gnum4.c
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@ -129,7 +129,7 @@ dopath(struct input_file *i, const char *filename)
for (pe = first; pe; pe = pe->next) {
snprintf(path, sizeof(path), "%s/%s", pe->name, filename);
if ((f = fopen(path, "r")) != 0) {
if ((f = fopen(path, "r")) != NULL) {
set_input(i, f, path);
return i;
}