Use project name variable

src/freedombone-sec

@@ -96,7 +96,7 @@ function export_passwords {
 
     clear
     backup_mount_drive ${USB_DRIVE}
-    ${PROJECT_NAME}-pass --export ${USB_MOUNT}/freedombone-passwords.xml
+    ${PROJECT_NAME}-pass --export ${USB_MOUNT}/${PROJECT_NAME}-passwords.xml
     backup_unmount_drive ${USB_DRIVE}
 }