During compilation, transfer the azVar[0..nzVar-1] array from Parse to Vdbe
rather than copying it.  Smaller and faster code.

FossilOrigin-Name: 80dd495f378614e4eca72e71e43061b1b94ee450
diff --git a/src/sqliteInt.h b/src/sqliteInt.h
index 5d8a504..6684953 100644
--- a/src/sqliteInt.h
+++ b/src/sqliteInt.h
@@ -2794,7 +2794,7 @@
   ** in the recursive region.
   ************************************************************************/
 
-  int nVar;                 /* Number of '?' variables seen in the SQL so far */
+  ynVar nVar;               /* Number of '?' variables seen in the SQL so far */
   int nzVar;                /* Number of available slots in azVar[] */
   u8 iPkSortOrder;          /* ASC or DESC for INTEGER PRIMARY KEY */
   u8 explain;               /* True if the EXPLAIN flag is found on the query */