fixed overly restrictive precondition
fixed overly restrictive precondition

capturePointer/vigra,timoMa/vigra,hmeine/vigra,DaveRichmond-/vigra,timoMa/vigra,capturePointer/vigra,xiwei-zhang/vigra,martinsch/vigra,capturePointer/vigra,dstoe/vigra,ThomasWalter/vigra,dstoe/vigra,timoMa/vigra,cbecker/vigra,DaveRichmond-/vigra,capturePointer/vigra,cha007/vigra,ThomasWalter/vigra,ThomasWalter/vigra,hmeine/vigra,timoMa/vigra,cha007/vigra,xiwei-zhang/vigra,xiwei-zhang/vigra,psteinb/vigra,stuarteberg/vigra,stuarteberg/vigra,xiwei-zhang/vigra,dstoe/vigra,DaveRichmond-/vigra,DaveRichmond-/vigra,psteinb/vigra,funkey/vigra,dagophil/vigra,xiwei-zhang/vigra,stuarteberg/vigra,capturePointer/vigra,mmuellner/vigra,hmeine/vigra,dagophil/vigra,mmuellner/vigra,cha007/vigra,funkey/vigra,ThomasWalter/vigra,kod3r/vigra,kod3r/vigra,dstoe/vigra,dagophil/vigra,funkey/vigra,dagophil/vigra,kod3r/vigra,mmuellner/vigra,cha007/vigra,ThomasWalter/vigra,ThomasWalter/vigra,xiwei-zhang/vigra,stuarteberg/vigra,dstoe/vigra,DaveRichmond-/vigra,psteinb/vigra,cbecker/vigra,dstoe/vigra,mmuellner/vigra,funkey/vigra,cbecker/vigra,cbecker/vigra,psteinb/vigra,capturePointer/vigra,hmeine/vigra,stuarteberg/vigra,funkey/vigra,hmeine/vigra,mmuellner/vigra,martinsch/vigra,funkey/vigra,dstoe/vigra,psteinb/vigra,hmeine/vigra,martinsch/vigra,ThomasWalter/vigra,xiwei-zhang/vigra,mmuellner/vigra,funkey/vigra,kod3r/vigra,mmuellner/vigra,kod3r/vigra,DaveRichmond-/vigra,capturePointer/vigra,timoMa/vigra,kod3r/vigra,martinsch/vigra,cha007/vigra,martinsch/vigra,psteinb/vigra,cha007/vigra,martinsch/vigra,dagophil/vigra,cha007/vigra,hmeine/vigra,dagophil/vigra,timoMa/vigra,kod3r/vigra,DaveRichmond-/vigra,cbecker/vigra,cbecker/vigra,dagophil/vigra,psteinb/vigra,timoMa/vigra,stuarteberg/vigra,stuarteberg/vigra