Fix type mismatches for malloc(3) and Co.

This is rather pedantic, as for most architectures it holds that
sizeof(type *) == sizeof(type **)

Found by:	clang static analyzer
Reviewed by:	ed
Differential Revision: https://reviews.freebsd.org/D4722

usr.bin/column/column.c

@@ -244,7 +244,7 @@ maketbl(void)
 		    p = NULL)
 			if (++coloff == maxcols) {
 				if (!(cols = realloc(cols, ((u_int)maxcols +
-				    DEFCOLS) * sizeof(char *))) ||
+				    DEFCOLS) * sizeof(wchar_t *))) ||
 				    !(lens = realloc(lens,
 				    ((u_int)maxcols + DEFCOLS) * sizeof(int))))
 					err(1, NULL);

usr.bin/locate/locate/util.c

@@ -93,7 +93,7 @@ colon(dbv, path, dot)
 	char **pv;
 
 	if (dbv == NULL) {
-		if ((dbv = malloc(sizeof(char **))) == NULL)
+		if ((dbv = malloc(sizeof(char *))) == NULL)
 			err(1, "malloc");
 		*dbv = NULL;
 	}
@@ -123,7 +123,7 @@ colon(dbv, path, dot)
 				*(p + slen) = '\0';
 			}
 			/* increase dbv with element p */
-			if ((dbv = realloc(dbv, sizeof(char **) * (vlen + 2)))
+			if ((dbv = realloc(dbv, sizeof(char *) * (vlen + 2)))
 			    == NULL)
 				err(1, "realloc");
 			*(dbv + vlen) = p;

usr.bin/xargs/xargs.c

@@ -234,7 +234,7 @@ main(int argc, char *argv[])
 	 * NULL.
 	 */
 	linelen = 1 + argc + nargs + 1;
-	if ((av = bxp = malloc(linelen * sizeof(char **))) == NULL)
+	if ((av = bxp = malloc(linelen * sizeof(char *))) == NULL)
 		errx(1, "malloc failed");
 
 	/*
@@ -471,7 +471,7 @@ prerun(int argc, char *argv[])
 	 * Allocate memory to hold the argument list, and
 	 * a NULL at the tail.
 	 */
-	tmp = malloc((argc + 1) * sizeof(char**));
+	tmp = malloc((argc + 1) * sizeof(char *));
 	if (tmp == NULL) {
 		warnx("malloc failed");
 		xexit(*argv, 1);

usr.sbin/mountd/mountd.c

@@ -422,7 +422,7 @@ main(int argc, char **argv)
 	 * list.
 	 */
 	if (nhosts == 0) {
-		hosts = malloc(sizeof(char**));
+		hosts = malloc(sizeof(char *));
 		if (hosts == NULL)
 			out_of_mem();
 		hosts[0] = "*";

usr.sbin/mpsutil/mps_cmd.c

@@ -486,7 +486,7 @@ mps_firmware_get(int fd, unsigned char **firmware, bool bios)
 	}
 
 	size = reply.ActualImageSize;
-	*firmware = calloc(1, sizeof(char) * size);
+	*firmware = calloc(1, sizeof(unsigned char) * size);
 	if (*firmware == NULL) {
 		warn("calloc");
 		return (-1);

usr.sbin/rpc.lockd/lockd.c

@@ -220,7 +220,7 @@ main(int argc, char **argv)
 	 * list.
 	 */
 	if (nhosts == 0) {
-		hosts = malloc(sizeof(char**));
+		hosts = malloc(sizeof(char *));
 		if (hosts == NULL)
 			out_of_mem();
 

usr.sbin/rpc.statd/statd.c

@@ -150,7 +150,7 @@ main(int argc, char **argv)
    * list.
    */
   if (nhosts == 0) {
-	  hosts = malloc(sizeof(char**));
+	  hosts = malloc(sizeof(char *));
 	  if (hosts == NULL)
 		  out_of_mem();
 

usr.sbin/rtsold/rtsold.c

@@ -888,7 +888,7 @@ autoifprobe(void)
 			warnmsg(LOG_WARNING, __func__,
 				"multiple interfaces found");
 
-		a = (char **)realloc(argv, (n + 1) * sizeof(char **));
+		a = realloc(argv, (n + 1) * sizeof(char *));
 		if (a == NULL) {
 			warnmsg(LOG_ERR, __func__, "realloc");
 			exit(1);
@@ -903,7 +903,7 @@ autoifprobe(void)
 	}
 
 	if (n) {
-		a = (char **)realloc(argv, (n + 1) * sizeof(char **));
+		a = realloc(argv, (n + 1) * sizeof(char *));
 		if (a == NULL) {
 			warnmsg(LOG_ERR, __func__, "realloc");
 			exit(1);