MenuBook: Fix books not closing properly when loading invalid file

RELEASE_NOTES.txt

@@ -67,6 +67,7 @@ Engine fixes:
 * Fix being able to talk to NPC allies after they die.
 * Prevent summons with zero base speed from teleporting with their summoner.
 * The text for dialog options now respects the 'font_dialog' property in menus/talker.txt.
+* Fixed books not closing properly when trying to load another book with an invalid filename.
 * Android: Fix 'Flare' directory not being automatically created.
 * Android: Added a dialog to direct the player to the wiki page for installing if no game data is found.
 

src/MenuBook.cpp

@@ -128,6 +128,10 @@ void MenuBook::loadBook() {
 
 		infile.close();
 	}
+	else {
+		closeWindow();
+		return;
+	}
 
 	refreshText();
 
@@ -335,6 +339,9 @@ void MenuBook::clearBook() {
 
 	delete event_close;
 	event_close = NULL;
+
+	delete background;
+	background = NULL;
 }
 
 void MenuBook::closeWindow() {
@@ -396,7 +403,7 @@ void MenuBook::logic() {
 	if (book_name.empty()) return;
 	else {
 		loadBook();
-		visible = true;
+		visible = book_loaded;
 	}
 
 	if (!visible)

src/Version.cpp

@@ -30,7 +30,7 @@ FLARE.  If not, see http://www.gnu.org/licenses/
 
 #include <SDL.h>
 
-Version VersionInfo::ENGINE(1, 14, 81);
+Version VersionInfo::ENGINE(1, 14, 82);
 Version VersionInfo::MIN(0, 0, 0);
 Version VersionInfo::MAX(USHRT_MAX, USHRT_MAX, USHRT_MAX);