correct endianness for cell_simple_p()

src/lib/egcpool.h

@@ -252,13 +252,13 @@ egcpool_dump(egcpool* pool){
 // unsafe results if called on a simple cell.
 static inline uint32_t
 cell_egc_idx(const cell* c){
-  return htole(c->gcluster) & 0x00fffffflu;
+  return (htole(c->gcluster) & 0xffffff00lu) >> 8u;
 }
 
 // Is the cell simple (a UTF8-encoded EGC of four bytes or fewer)?
 static inline bool
 cell_simple_p(const cell* c){
-  return (htole(c->gcluster) & 0xff000000ul) != 0x01000000ul;
+  return (htole(c->gcluster) & 0xffu) != 0x01u;
 }
 
 // only applies to complex cells, do not use on simple cells