JIT: flush *after* the merged branch, not before

More correct and should avoid lots of redundant stores.
Merge pull request #822 from FioraAeterna/integerflush2

JIT: flush *after* the merged branch, not before
Merge branch 'master' of https://github.com/dolphin-emu/dolphin into VR-Hydra
Twilight princess GameCube working settings.
Wave Race Blue Storm scale set, but still buggy.