MythMusic search freezes if first character is space

[wseltzer <wseltzer@…>]

In the MythMusic incremental search, entering a space as the first character of a field hangs the search dialogue. (It's a problem mostly if you use the comma-separation feature, e.g., typing "beethoven, violin", but the bug also appears if you enter space as the first and only character.)

To duplicate, call up the search dialogue (M,search from the play music screen), and type space. Frontend hangs.

I don't recall this happening earlier, so it may be a problem in the new highlighting code.

Backtrace attached, at svn rev 8371

--Wendy

[paulh]

(In [8372]) Fix #863. Don't strip white space from search string.