--- groff-1.18.1.1/src/devices/grohtml/post-html.cc.orig	2006-03-09 06:40:16.000000000 +0900
+++ groff-1.18.1.1/src/devices/grohtml/post-html.cc	2006-03-09 06:40:29.000000000 +0900
@@ -260,17 +260,17 @@
   int           used;
   char_block   *next;
 
-  char_block();
-  char_block::char_block(int length);
+  char_block(void);
+  char_block(int length);
 };
 
 char_block::char_block()
-: buffer(NULL), used(0), next(0)
+: buffer(NULL), used(0), next(NULL)
 {
 }
 
 char_block::char_block(int length)
-: used(0), next(0)
+: used(0), next(NULL)
 {
   buffer = (char *)malloc(max(length, char_block::SIZE));
   if (buffer == NULL)