Remove unused variables.

usr.bin/du/du.c

@@ -307,7 +307,7 @@ linkchk(FTSENT *p)
 	struct links_entry *le, **new_buckets;
 	struct stat *st;
 	size_t i, new_size;
-	int count, hash;
+	int hash;
 
 	st = p->fts_statp;
 
@@ -325,7 +325,6 @@ linkchk(FTSENT *p)
 	if (number_entries > number_buckets * 10 && !stop_allocating) {
 		new_size = number_buckets * 2;
 		new_buckets = malloc(new_size * sizeof(struct links_entry *));
-		count = 0;
 
 		/* Try releasing the free list to see if that helps. */
 		if (new_buckets == NULL && free_list != NULL) {

usr.bin/id/id.c

@@ -379,10 +379,9 @@ who(char *u)
 void
 pline(struct passwd *pw)
 {
-	u_int rid;
 
 	if (!pw) {
-		if ((pw = getpwuid(rid = getuid())) == NULL)
+		if ((pw = getpwuid(getuid())) == NULL)
 			err(1, "getpwuid");
 	}
 

usr.bin/nl/nl.c

@@ -144,7 +144,7 @@ main(argc, argv)
 	int argc;
 	char *argv[];
 {
-	int c, n;
+	int c;
 	long val;
 	unsigned long uval;
 	char *ep;

usr.bin/sed/process.c

@@ -92,9 +92,8 @@ process(void)
 {
 	struct s_command *cp;
 	SPACE tspace;
-	size_t len, oldpsl = 0;
+	size_t oldpsl = 0;
 	char *p;
-	char nc;
 
 	p = NULL;
 

usr.bin/systat/mbufs.c

@@ -168,7 +168,6 @@ showmbufs()
 int
 initmbufs()
 {
-	int i;
 	size_t len;
 
 	len = sizeof *mbstat;

usr.bin/tr/tr.c

@@ -76,7 +76,7 @@ main(int argc, char **argv)
 	struct cset *delete, *squeeze;
 	int n, *p;
 	int Cflag, cflag, dflag, sflag, isstring2;
-	wint_t ch, cnt, i, lastch;
+	wint_t ch, cnt, lastch;
 
 	(void)setlocale(LC_ALL, "");
 

usr.bin/whereis/whereis.c

@@ -102,10 +102,9 @@ usage(void)
 void
 scanopts(int argc, char **argv)
 {
-	int c, i, opt_f;
+	int c, i;
 	ccharp **dirlist;
 
-	opt_f = 0;
 	while ((c = getopt(argc, argv, "BMSabfmqsux")) != -1)
 		switch (c) {
 		case 'B':