moved FlushOnCleanup from VolumeParam to struct fuse

inc/winfsp/fsctl.h

@@ -250,8 +250,7 @@ enum
     UINT32 StreamInfoTimeout;           /* stream info timeout (millis); overrides FileInfoTimeout */\
     UINT32 EaTimeout;                   /* EA timeout (millis); overrides FileInfoTimeout */\
     UINT32 FsextControlCode;\
-    UINT32 FlushOnCleanup:1;\
-    UINT32 Reserved32:31;\
+    UINT32 Reserved32[1];\
     UINT64 Reserved64[2];
 typedef struct
 {

inc/winfsp/winfsp.hpp

@@ -620,14 +620,6 @@ public:
     {
         _VolumeParams.FlushAndPurgeOnCleanup = !!FlushAndPurgeOnCleanup;
     }
-    BOOLEAN FlushOnCleanup()
-    {
-        return _VolumeParams.FlushOnCleanup;
-    }
-    VOID SetFlushOnCleanup(BOOLEAN FlushOnCleanup)
-    {
-        _VolumeParams.FlushOnCleanup = !!FlushOnCleanup;
-    }
     PWSTR Prefix()
     {
         return _VolumeParams.Prefix;