Bug#876112: fvwm: buffer overflow crash after opening lots of clients

[Jonathan David Amery]

Hi,

 Oops, there's a bug in the steps to reproduce there introduced while I
sanitized the filename of my png file.  The steps should be:

1. start fvwm2
2. find a small png file
3. for x in $(seq 1 2000); do display small.png & done
4. fvwm crashes

J.