bugreport: jit.qt.record write lossless.mov doesn't work

Hi,

This is quite harmless problem, but anyway...

Summary:
Jit.qt.record isn't able to record a movie called lossless.mov

Steps to Reproduce:
With the patch bellow press on both button, one works (toto.mov is
written somewhere on the HD) the other failed (lossless.mov is not
written anywhere).

Expected Results:
A file called lossless.mov should be created.

Actual Results:
Nothing appends nor movie creation nor error message.

Regression:
it appends every time.

Notes:
max, min, low, normal and high are valid files names. but I can' make
this works... be it's another problem.

Best,
ej

PS: using max 4.56 (or higher...) Jitter 1.52