TracBrowser: fix IExplorer issue mentioned in r5362, thanks mitsuhiko for the help. Actually, I got that right myself in r5280... oh well.
TracBrowser: fix IExplorer issue mentioned in r5362, thanks mitsuhiko for the help. Actually, I got that right myself in r5280... oh well.

git-svn-id: f68c6b3b1dcd5d00a2560c384475aaef3bc99487@5366 af82e41b-90c4-0310-8c96-b1721e28e2e2

dokipen/trac,dafrito/trac-mirror,moreati/trac-gitsvn,dafrito/trac-mirror,exocad/exotrac,dokipen/trac,moreati/trac-gitsvn,exocad/exotrac,exocad/exotrac,dafrito/trac-mirror,dafrito/trac-mirror,dokipen/trac,moreati/trac-gitsvn,moreati/trac-gitsvn,exocad/exotrac