Update parse_misc.cc

Fixed bug described in #110

vhdlpp/parse_misc.cc

@@ -121,7 +121,11 @@ const VType* calculate_subtype_array(const YYLTYPE&loc, const char*base_name,
 	    Expression*lef = tmpr->left();
 	    Expression*rig = tmpr->right();
 	    return calculate_subtype_array(loc, base_name, scope,
-					   lef, tmpr->direction(), rig);
+					   lef, 
+					   (tmpr->direction() == ExpRange::range_dir_t::DOWNTO
+					   	? true
+					   	: false), 
+					   rig);
       }
 
       sorrymsg(loc, "Don't know how to handle multiple ranges here.\n");