Index: sbin/mount/getmntopts.c
===================================================================
--- sbin/mount/getmntopts.c
+++ sbin/mount/getmntopts.c
@@ -175,11 +175,14 @@
 {
 	va_list ap;
 	char val[255] = { 0 };
+	char *sval;
 
 	va_start(ap, fmt);
 	vsnprintf(val, sizeof(val), fmt, ap);
 	va_end(ap);
-	build_iovec(iov, iovlen, name, strdup(val), (size_t)-1);
+	sval = strdup(val);
+	build_iovec(iov, iovlen, name, sval, (size_t)-1);
+	free(sval);
 }
 
 /*