two small bugs in the query tool

on a build from CVS HEAD on SUSE 9.1, LANG=en_US.UTF-8

- when starting the query tool with an empty sheet, then immediately
exiting via the file menu (without having entered any text, so the
"Do you want to save changes?" dialogue is not triggered) sometimes
I get segfaults, though I can't always reproduced them.

- when starting the query tool with an empty sheet and entering
non-ASCII characters
(such as German umlaut letters, e.g. 'ä') the following message pops up:  src/common/string.cpp(1060): assert "nLen !=
(size_t)-,1"failed. Do you want to stop the program? 

Selecting no or cancel doesn't seem to cause any problems.


Ian Barwick