Fix #616

My bad, not enough brain cycles...
On Oct 2, 2014 9:56 PM, "Robert McGibbon" <notifications@github.com> wrote:

> In MDTraj/formats/xtc/src/xdrfile.c:
>
> > @@ -988,7 +988,12 @@ xdrfile_decompress_coord_float(float     *ptr,
> >  			smaller = smallnum;
> >  			smallnum = magicints[smallidx] / 2;
> >  		}
> > -		sizesmall[0] = sizesmall[1] = sizesmall[2] = magicints[smallidx] ;
> > +		sizesmall[0] = sizesmall[1] = sizesmall[2] = magicints[smallidx];
> > +		if (sizesmall==0 || sizesmall==0 || sizesmall[2]==0)
>
> Goot catch. should be (sizesmall[0]==0 || sizesmall[1]==0 ||
> sizesmall[2]==0)
>
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> <https://github.com/SimTk/mdtraj/pull/617/files#r18378520>.
>