Bug#811676: FTBFS with GCC 6: could not convert a from x to y

[Robert Bihlmeyer]

Package: fbreader
Followup-For: Bug #811676

Looks legit. Simple fix attached.

diff -ru fbreader-0.12.10dfsg2/fbreader/src/database/booksdb/BooksDB.cpp fbreader-0.12.10dfsg2+/fbreader/src/database/booksdb/BooksDB.cpp
--- fbreader-0.12.10dfsg2/fbreader/src/database/booksdb/BooksDB.cpp	2010-04-01 15:14:24.000000000 +0200
+++ fbreader-0.12.10dfsg2+/fbreader/src/database/booksdb/BooksDB.cpp	2016-07-01 13:24:36.919070856 +0200
@@ -145,7 +145,7 @@
 
 	myFindFileId->setFileName(fileName);
 	if (!myFindFileId->run()) {
-		return false;
+		return 0;
 	}
 	((DBIntValue&)*myLoadBook->parameter("@file_id").value()) = myFindFileId->fileId();
 	shared_ptr<DBDataReader> reader = myLoadBook->executeReader();