minor updates for release

lib/readline/doc/history.3

@@ -291,7 +291,7 @@ in new commands.  The basic history manipulation commands are
 identical to
 the history substitution provided by \fBbash\fP.
 .PP
-The programmer can also use the Readline library, which
+The programmer can also use the readline library, which
 includes some history manipulation by default, and has the added
 advantage of command line editing.
 .PP

lib/readline/history.c

@@ -397,7 +397,7 @@ replace_history_entry (int which, const char *line, histdata_t data)
 
   temp->line = savestring (line);
   temp->data = data;
-  temp->timestamp = savestring (old_value->timestamp);
+  temp->timestamp = old_value->timestamp ? savestring (old_value->timestamp) : 0;
   the_history[which] = temp;
 
   return (old_value);