minor improvement to HDF5File test
minor improvement to HDF5File test

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