[Spellcheck] Interrupt the spellchecker to crash Geany

[12345ieee]

How-to:

• Start spell-checking a large document (I used a 4MB file that I can provide, if needed)
• Close said file while the spell-checking is still ongoing
• Geany crashes

Trace:

$ geany -v
...
SpellCheck-Message: Checking file "**redacted**" (using "en_US" (myspell)):
Errore di segmentazione

[eht16]

Oops. Thanks for reporting. Should be fixed in GIT master.

In theory there might be a possibility to crash again but this should be very rare and hard to trigger.

[12345ieee]

I tested it a bit and indeed it seems fixed.

Thanks.