fix Issue 12900 - Wrong code in IfStatement condition Expression
[WS] Replace tab with spaces.

Tab was added in d8e5f55c9b94e831b6d178a20e34144933c3fc32.
Merge pull request #3694 from denis-sh/ws-fixup-pull-3687

[Whitespace] Replace tab with spaces.
Merge pull request #3685 from 9rnsr/fix12900

More conservative fix for issue 12900 - Wrong code in IfStatement condition Expression