#392 Joe Blade II fails to load with either loader detection or accelerated loading turned on

[Philip Kendall]

The TZX of the original release of Joe Blade II (sha256 22082dbb86b832cf3869173b075b8ddceecb4cba59fcc5a997f69a7c31d69a6a) fails to load if either loader detection or accelerated loading is turned on. It loads successfully with --no-detect-loader --no-accelerate-loader.

Added to check_loaders as a test case.

[Philip Kendall]

Fixed as part of the changes for [bugs:#387].