fixed the reading of unions in osl_relation_poly_psread() function
fixed the reading of unions in osl_relation_poly_psread() function

BobSaget-Mod/osl-saber,realincubus/openscop,periscop/openscop,BobSaget-Mod/osl-saber,ftynse/openscop,UBERTC/osl,realincubus/openscop,periscop/openscop,UBERTC/osl,ftynse/openscop,realincubus/openscop,periscop/openscop,Haerezis/openscop,Haerezis/openscop,ftynse/openscop,Haerezis/openscop,BobSaget-Mod/osl-saber,UBERTC/osl