Fix: don't create sidecar file when indexing pdf documents (#5384)
Fix: don't create sidecar file when indexing pdf documents (#5384)


poire-z/koreader,koreader/koreader,NiLuJe/koreader,Markismus/koreader,koreader/koreader,Frenzie/koreader,pazos/koreader,Frenzie/koreader,Hzj-jie/koreader,poire-z/koreader,mihailim/koreader,mwoz123/koreader,NiLuJe/koreader