fixed signed/unsigned mismatch
fixed signed/unsigned mismatch

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