[Webkit-unassigned] [Bug 147800] Use python 'with' statement to make cleanup more robust and minor code cleaning

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=147800

dewei_zhu at apple.com changed:

           What    |Removed                     |Added
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 Attachment #258543|                            |review?
              Flags|                            |

--- Comment #1 from dewei_zhu at apple.com ---
Created attachment 258543
  --> https://bugs.webkit.org/attachment.cgi?id=258543&action=review
Patch

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