fixed signed/unsigned mismatch
fixed signed/unsigned mismatch

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