(Fcall_interactively): When checking to see if doprnt hit

the end of callint_message, allow for a terminating '\0'.

src/ChangeLog

+2002-06-25  Miles Bader  <miles@gnu.org>
+
+	* callint.c (Fcall_interactively): When checking to see if doprnt hit
+	the end of callint_message, allow for a terminating '\0'.
+
 2002-06-24  Juanma Barranquero  <lektu@terra.es>
 
 	* w32select.c: Include composite.h

src/callint.c

@@ -464,7 +464,7 @@ supply if the command inquires which events were used to invoke it.  */)
 	  int nchars = doprnt (callint_message, callint_message_size,
 			       prompt1, (char *)0,
 			       j - 1, (char **) argstrings + 1);
-	  if (nchars < callint_message_size)
+	  if (nchars < callint_message_size - 1)
 	    break;
 	  callint_message_size *= 2;
 	  callint_message