Remove confusing casts between synonyms
Remove confusing casts between synonyms

oslMutex and oslMutexImpl* are synonyms (via two typedefs).
Casting between them makes the reader believe some more nefarious trick is at hand.

Change-Id: Ib0e609fd1facca4d47242392ed2f8ff08451346b

JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core