--- src/broadcast.c~	2011-03-27 23:53:08.000000000 -0400
+++ src/broadcast.c	2012-05-21 21:23:11.914815287 -0400
@@ -82,8 +82,10 @@
 
 	/* Force coding_history_size to be even. */
 	len = strlen (psf->broadcast_16k->coding_history) ;
-	len += (len & 1) ? 1 : 2 ;
-	psf->broadcast_16k->coding_history_size = len ;
+        if (len && ( len & 1)) {
+                len += 1;
+        }
+        psf->broadcast_16k->coding_history_size = len ;
 
 	/* Currently writing this version. */
 	psf->broadcast_16k->version = 1 ;