Fix some printf type errors in indexer.cc
Fix some printf type errors in indexer.cc

lekkas/livegrep,lekkas/livegrep,paulproteus/livegrep,lekkas/livegrep,paulproteus/livegrep,paulproteus/livegrep,paulproteus/livegrep,wfxiang08/livegrep,wfxiang08/livegrep,lekkas/livegrep,lekkas/livegrep,paulproteus/livegrep,wfxiang08/livegrep,wfxiang08/livegrep,wfxiang08/livegrep,paulproteus/livegrep,lekkas/livegrep,wfxiang08/livegrep