- Fix usage of setmode. it can fail due to malloc, so we should print the
  correct error message.

Obtained-From: DragonFlyBSD
Index: src/usr.bin/find/function.c
===================================================================
--- src/usr.bin/find/function.c	(revision 92)
+++ src/usr.bin/find/function.c	(revision 93)
@@ -1196,8 +1196,14 @@
 		++perm;
 	}
 
-	if ((set = setmode(perm)) == NULL)
-		errx(1, "%s: %s: illegal mode string", option->name, perm);
+	errno = 0;
+	if ((set = setmode(perm)) == NULL) {
+		if (!errno)
+			errx(1, "%s: %s: illegal mode string", option->name,
+			    perm);
+		else
+			err(1, "malloc failed");
+	}
 
 	new->m_data = getmode(set, 0);
 	free(set);