Revised fix for the DESC ORDER BY and IN constraint bug,

ticket [4dd95f6943fbd18].  The previous check-in was incorrect.

FossilOrigin-Name: 8b2eb7a43b4580f04c14ea8600cf080e0e7f384d

src/sqliteInt.h

@@ -1931,7 +1931,6 @@ struct WherePlan {
   u32 wsFlags;                   /* WHERE_* flags that describe the strategy */
   u16 nEq;                       /* Number of == constraints */
   u16 nOBSat;                    /* Number of ORDER BY terms satisfied */
-  u16 iOBSat;                    /* First ORDER BY term satisfied */
   double nRow;                   /* Estimated number of rows (for EQP) */
   union {
     Index *pIdx;                   /* Index when WHERE_INDEXED is true */