reftable: fix calls to free(3P)

There are a small set of calls to free(3P) in the reftable library. As
the reftable allocators are pluggable we should rather call the reftable
specific function, which is `reftable_free()`.

Convert the code accordingly.

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

Author: pks-t

reftable/stack.c

@@ -1421,7 +1421,7 @@ static int stack_compact_range(struct reftable_stack *st,
 		struct lock_file *table_lock = &table_locks[i];
 		char *table_path = get_locked_file_path(table_lock);
 		unlink(table_path);
-		free(table_path);
+		reftable_free(table_path);
 	}
 
 done:

t/unit-tests/t-reftable-readwrite.c

@@ -76,8 +76,8 @@ static void write_table(char ***names, struct strbuf *buf, int N,
 
 	t_reftable_write_to_buf(buf, refs, N, logs, N, &opts);
 
-	free(refs);
-	free(logs);
+	reftable_free(refs);
+	reftable_free(logs);
 }
 
 static void t_log_buffer_size(void)