Fix a problem with UPDATE and DELETE statements that use both INDEXED BY and LIMIT clauses in SQLITE_ENABLE_UPDATE_DELETE_LIMIT builds.

Author: danielk-1977

src/delete.c

@@ -207,10 +207,12 @@ Expr *sqlite3LimitWhere(
   /* duplicate the FROM clause as it is needed by both the DELETE/UPDATE tree
   ** and the SELECT subtree. */
   pSrc->a[0].pTab = 0;
-  pSelectSrc = sqlite3SrcListDup(pParse->db, pSrc, 0);
+  pSelectSrc = sqlite3SrcListDup(db, pSrc, 0);
   pSrc->a[0].pTab = pTab;
   if( pSrc->a[0].fg.isIndexedBy ){
     pSrc->a[0].u2.pIBIndex = 0;
+    pSrc->a[0].fg.isIndexedBy = 0;
+    sqlite3DbFree(db, pSrc->a[0].u1.zIndexedBy);
   }else if( pSrc->a[0].fg.isCte ){
     pSrc->a[0].u2.pCteUse->nUse++;
   }