[r136] BSOD crash by Fill tool w/ transparency

Steps to reproduce:

1. Create a new particle object (have only tested with it, accidentally, about 3 times)

2. Select fill tool

3. Set transparency to 80 or something

4. Click the canvas, if it does nothing, click twice

Observed result:

Construct freezes, then Windows gets really slow then BSOD.

Expected result:

Use transparency in Fill tool.

Operating system & service pack:

Win8 x64

Construct 2 version:

r136

It's not normally possible for software like Construct 2 to BSOD - usually that's a driver, OS or hardware issue. However I did find a possible hang using the fill tool following your steps and fixed it, so hopefully it's fixed for the next build.