reftable/reader: inline reader_seek_internal()

We have both `reader_seek()` and `reader_seek_internal()`, where the
former function only exists so that we can exit early in case the given
table has no records of the sought-after type.

Merge these two functions into one.

Signed-off-by: Patrick Steinhardt <[email protected]>
Signed-off-by: Junio C Hamano <[email protected]>

Author: pks-t

reftable/reader.c

@@ -573,21 +573,25 @@ static int table_iter_seek_indexed(struct table_iter *ti,
 	return err;
 }
 
-static int reader_seek_internal(struct reftable_reader *r,
-				struct reftable_iterator *it,
-				struct reftable_record *rec)
+static int reader_seek(struct reftable_reader *r, struct reftable_iterator *it,
+		       struct reftable_record *rec)
 {
-	struct reftable_reader_offsets *offs =
-		reader_offsets_for(r, reftable_record_type(rec));
-	uint64_t idx = offs->index_offset;
+	uint8_t typ = reftable_record_type(rec);
+	struct reftable_reader_offsets *offs = reader_offsets_for(r, typ);
 	struct table_iter ti = TABLE_ITER_INIT, *p;
 	int err;
 
-	err = table_iter_seek_start(&ti, r, reftable_record_type(rec), !!idx);
+	if (!offs->is_present) {
+		iterator_set_empty(it);
+		return 0;
+	}
+
+	err = table_iter_seek_start(&ti, r, reftable_record_type(rec),
+				    !!offs->index_offset);
 	if (err < 0)
 		goto out;
 
-	if (idx)
+	if (offs->index_offset)
 		err = table_iter_seek_indexed(&ti, rec);
 	else
 		err = table_iter_seek_linear(&ti, rec);
@@ -604,20 +608,6 @@ static int reader_seek_internal(struct reftable_reader *r,
 	return err;
 }
 
-static int reader_seek(struct reftable_reader *r, struct reftable_iterator *it,
-		       struct reftable_record *rec)
-{
-	uint8_t typ = reftable_record_type(rec);
-
-	struct reftable_reader_offsets *offs = reader_offsets_for(r, typ);
-	if (!offs->is_present) {
-		iterator_set_empty(it);
-		return 0;
-	}
-
-	return reader_seek_internal(r, it, rec);
-}
-
 int reftable_reader_seek_ref(struct reftable_reader *r,
 			     struct reftable_iterator *it, const char *name)
 {