Gave fast table entry a nicer name.

upb/msg.h

@@ -46,21 +46,21 @@ typedef struct {
   uint8_t label;          /* google.protobuf.Label or _UPB_LABEL_* above. */
 } upb_msglayout_field;
 
-struct upb_msglayout;
 struct upb_decstate;
+struct upb_msglayout;
 
 typedef const char *_upb_field_parser(struct upb_decstate *d, const char *ptr,
                                       upb_msg *msg,
                                       const struct upb_msglayout *table,
                                       uint64_t hasbits, uint64_t data);
 
-typedef struct _upb_table_pair {
+typedef struct {
   _upb_field_parser *field_parser;
   uint64_t field_data;
-} _upb_table_pair;
+} _upb_fasttable_entry;
 
 typedef struct upb_msglayout {
-  _upb_table_pair fasttable[32];
+  _upb_fasttable_entry fasttable[32];
   const struct upb_msglayout *const* submsgs;
   const upb_msglayout_field *fields;
   /* Must be aligned to sizeof(void*).  Doesn't include internal members like