[Core]: [Crash]: Crash happened when make some operation with decimal number in the Tab Size/Spaces field.

[dil77307]

Problems
​The Brackets is frozen when make some operation with decimal number in the Tab Size field or Spaces field.

Method

1. Install and Launch Brackets Sprint24_6763.
2. Open or New a file.
3. Click on the number displayed besides Spaces/Tab Size.
4. Change the default setting to a decimal number like (4.8)
5. Input some characters in the code panel
6. Press Backspace button on the keyboard

Result
Brackets is frozen and crash.

Expected:
Do not support decimal number input OR Brackets can live with the decimal number

Build info:
Mac: Sprint24_6763.
Win: Sprint24_6763.

Workaround
​Force quit Brackets and re-launch Brackets.

Screenshot:

[peterflynn]

The app freezes with CPU maxed out, so this is a legitimate dataloss bug -- you can't save your work after this.

[njx]

Reviewed. Medium priority, to @TomMalbran since he already has a fix up for it :)

[dil77307]

Confirmed that the problem has been fixed both on Mac and Win.
The number field only supports inputting integer, which is correct.
Verified the issue with build:
Mac: Sprint 24_7097
Win: Sprint 24_7097
Screenshot: