Avoid a test for CURTYPE_BTREE in sqlite3VdbeCursorMoveto() in order to reduce

the size and improve the performance of OP_Column.

FossilOrigin-Name: f078deb25149b7b1881b7f3374b343d0677e82336d8fdd7f1cdd06d926b5dd57

src/btree.h

@@ -230,6 +230,7 @@ int sqlite3BtreeCursor(
   struct KeyInfo*,                     /* First argument to compare function */
   BtCursor *pCursor                    /* Space to write cursor structure */
 );
+BtCursor *sqlite3BtreeFakeValidCursor(void);
 int sqlite3BtreeCursorSize(void);
 void sqlite3BtreeCursorZero(BtCursor*);
 void sqlite3BtreeCursorHintFlags(BtCursor*, unsigned);