ves_icall_System_Threading_Mutex_ReleaseMutex_internal (gpointer handle);
gpointer
-ves_icall_System_Threading_Mutex_OpenMutex_internal (MonoString *name, gint32 rights, gint32 *error);
+ves_icall_System_Threading_Mutex_OpenMutex_internal (MonoStringHandle name, gint32 rights, gint32 *err, MonoError *error);
typedef struct MonoW32HandleNamedMutex MonoW32HandleNamedMutex;