usr.bin/make add missing function comment

[Max Okumoto <okumoto@xxxxxxxx>]

diff -b -ru  dfly-src/make/util.c fbsd-src/make/util.c
--- dfly-src/make/util.c	Wed Nov 17 04:21:44 2004
+++ fbsd-src/make/util.c	Wed Nov 17 04:21:43 2004
@@ -250,11 +250,13 @@
 	return unlink(file);
 }
 
-
+/*
+ * Printaddr --
+ * 	Print the address of a node, used as an interative function.
+ */
 int
 PrintAddr(void *a, void *b __unused)
 {
     printf("%p ", a);
     return 0;
 }
-