Merge pull request #787 from Gluejar/fix-regression

Fix regression

core/bookloader.py

@@ -273,8 +273,11 @@ def add_by_isbn_from_google(isbn, work=None):
 
     logger.info(u"adding new book by isbn %s", isbn)
     results = get_google_isbn_results(isbn)
-    if results:
+    if results and 'items' in results:
         item = get_isbn_item(results['items'], isbn)
+        if not item:
+            logger.exception(u"no items for %s", isbn)
+            return None
         try:
             return add_by_googlebooks_id(
                 item['id'],