Fix compiler warnings with Visual Studio #8
Description
The linked patch fixes 4 compiler warning when building with VS2008 x64.
http://bazaar.launchpad.net/~kovid/calibre/trunk/revision/13802
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The linked patch fixes 4 compiler warning when building with VS2008 x64.
http://bazaar.launchpad.net/~kovid/calibre/trunk/revision/13802