Fix a webadmin bug which was introduced in r1569
Fix a webadmin bug which was introduced in r1569

The directory prefix checking which prevents path traversal exploits had a logic
error that made it always fail.


git-svn-id: 3ad904ec35b89a071badd9cb0113dfe58093e920@1574 726aef4b-f618-498e-8847-2d620e286838

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