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remove unnecessary checks for NULL before free 

Since free(NULL) is a no-op, it is safe to remove unnecesary
if checks.
This commit is contained in:
Stephen Hemminger 2015-07-21 10:49:54 -07:00
parent 122f2fc573
commit 92de1c2c82
2 changed files with 5 additions and 10 deletions
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3
misc/lnstat_util.c
View File

@ -322,8 +322,7 @@ struct lnstat_field *lnstat_find_field(struct lnstat_file *lnstat_files,
}
}
out:
if (file)
free(file);
free(file);
return ret;
}

12
misc/ss.c
View File

@ -1994,8 +1994,7 @@ static void tcp_show_info(const struct nlmsghdr *nlh, struct inet_diag_msg *r,
s.segs_out = info->tcpi_segs_out;
s.segs_in = info->tcpi_segs_in;
tcp_stats_print(&s);
if (s.dctcp)
free(s.dctcp);
free(s.dctcp);
}
}
@ -2380,8 +2379,7 @@ static int tcp_show(struct filter *f, int socktype)
outerr:
do {
int saved_errno = errno;
if (buf)
free(buf);
free(buf);
if (fp)
fclose(fp);
errno = saved_errno;
@ -2514,8 +2512,7 @@ static void unix_list_free(struct sockstat *list)
list = list->next;
if (name)
free(name);
free(name);
free(s);
}
}
@ -2679,8 +2676,7 @@ static int unix_show_sock(const struct sockaddr_nl *addr, struct nlmsghdr *nlh,
if (show_mem || show_details)
printf("\n");
if (name)
free(name);
free(name);
return 0;
}