fixed signed/unsigned mismatch
fixed signed/unsigned mismatch

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