$NetBSD: patch-tr2_c,v 1.1 2011/09/04 01:22:04 dholland Exp $

Don't use NULL as an integer zero.

--- tr2.c~	1986-12-31 04:02:20.000000000 +0000
+++ tr2.c
@@ -321,7 +321,7 @@ init_enc()
  * Returns ERROR if codes are too long.
  */
 
-int		/* returns ERROR or NULL */
+int		/* returns ERROR or FALSE */
 buildenc(level, root)
 int level;/* level of tree being examined, from zero */
 int root; /* root of subtree is also data value if leaf */
@@ -347,7 +347,7 @@ int root; /* root of subtree is also dat
 #ifdef DEBUG
 		if (debug) printf("  codelen[%d]=%d,code[%d]=%02x\n",root,codelen[root],root,code[root]);
 #endif
-		return ((level > 16) ? ERROR : NULL);
+		return ((level > 16) ? ERROR : FALSE);
 	} else {
 		if( l != NOCHILD) {
 			/* Clear path bit and continue deeper */
@@ -364,7 +364,7 @@ int root; /* root of subtree is also dat
 				return (ERROR);
 		}
 	}
-	return (NULL);	/* if we got here we're ok so far */
+	return (FALSE);	/* if we got here we're ok so far */
 }
 /*  */
 /* Write out the header of the compressed file */