As discussed in the prior commit, this refers to a field that does not and has
never existed.
#define GD_has_sinkrank(g) (((Agraphinfo_t*)AGDATA(g))->has_sinkrank)
#define GD_ht1(g) (((Agraphinfo_t*)AGDATA(g))->ht1)
#define GD_ht2(g) (((Agraphinfo_t*)AGDATA(g))->ht2)
-#define GD_inleaf(g) (((Agraphinfo_t*)AGDATA(g))->inleaf)
#define GD_installed(g) (((Agraphinfo_t*)AGDATA(g))->installed)
#define GD_label(g) (((Agraphinfo_t*)AGDATA(g))->label)
#define GD_leader(g) (((Agraphinfo_t*)AGDATA(g))->leader)