Comment 8 for bug 727372

Comment on attachment 525655
Use GIO for finding the default handler (v2)

>+ if (NS_FAILED(giovfs->GetAppForURIScheme(nsDependentCString(aProtocolScheme),
>+ getter_AddRefs(app))))

"getter_AddRefs(app)" is not a parameter to NS_FAILED() but to GetAppForURIScheme() so it should be aligned with "nsDependentCString(aProtocolScheme)".