Fixes games that use the MMU to page in code(Rogue Leader).

The issue was that on memory exception we wouldn't call in to PPCAnalyst and our code_block would retain the previous blocks information.
This would cause us to compile the previous blocks instructions in prior to the exception exit.
Merge pull request #356 from Sonicadvance1/Fix-MMUAnalyst

Fixes games that use the MMU to page in code(Rogue Leader).