Fix a compile error in debug mode

No functional change.

Signed-off-by: Marco Costalba <mcostalba@gmail.com>

diff --git a/src/book.cpp b/src/book.cpp
index d6dcf6c..091767b 100644 (file)
--- a/src/book.cpp
+++ b/src/book.cpp
@@ -508,7 +508,7 @@ int Book::find_entry(uint64_t key) {
 BookEntry Book::read_entry(int idx) {
 
   assert(idx >= 0 && idx < bookSize);
-  assert(is_open());
+  assert(bookFile.is_open());
 
   BookEntry e;