hook branch - BUG: Address quoted math error

[blowekamp]

Fixes the following error messsage on Mac OSX:

bash: ""1024" 1024": syntax error: operand expected (error token is """1024" 1024"")

PR Checklist

• [ ] No API changes were made (or the changes have been approved)
• [ ] No major design changes were made (or the changes have been approved)
• [ ] Added test (or behavior not changed)
• [ ] Updated API documentation (or API not changed)
• [ ] Added license to new files (if any)
• [ ] Added Python wrapping to new files (if any) as described in ITK Software Guide Section 9.5
• [ ] Added ITK examples for all new major features (if any)

Refer to the ITK Software Guide for further development details if necessary.

[bradking]

The hooks branch comes from our GitSetup project, where this was fixed here. I just pushed the updated branch, so this PR should not be necessary.