Compile fix for DMD 2.064.
Compile fix for DMD 2.064.

xentec/dub,p0nce/dub,Geod24/dub,D-Programming-Language/dub,rjframe/dub,Abscissa/dub,y12uc231/dub,nazriel/dub,jeanbaptistelab/dub,gedaiu/dub,schuetzm/dub,Flamaros/dub,alexeibs/dub,Abscissa/dub-data-mod,jelmansouri/dub,grogancolin/dub,dreamsxin/dub