Index: html.c
===================================================================
RCS file: /cvsroot/bogofilter/bogofilter/src/html.c,v
retrieving revision 1.1
diff -u -r1.1 html.c
--- html.c	3 Feb 2003 16:55:14 -0000	1.1
+++ html.c	3 Feb 2003 22:38:38 -0000
@@ -87,7 +87,8 @@
 		    buf_used -= tmp + 1 - buf_start;
 		}
 		tmp = buf_start;
-		level -= 1;
+		if (level > 0)
+		    level -= 1;
 	    }
 	}
 	else {