Do not check immediate foreign key constraints until the end of the statement. This matches the postgres behaviour.

FossilOrigin-Name: 1a32149cc3c722058f4ed4c81edadeb6ce5bc9e4

src/vdbeInt.h

@@ -315,6 +315,7 @@ struct Vdbe {
   int aCounter[2];        /* Counters used by sqlite3_stmt_status() */
   char *zSql;             /* Text of the SQL statement that generated this */
   void *pFree;            /* Free this when deleting the vdbe */
+  i64 nFkConstraint;      /* Number of imm. FK constraints this VM */
   i64 nStmtDefCons;       /* Number of def. constraints when stmt started */
   int iStatement;         /* Statement number (or 0 if has not opened stmt) */
 #ifdef SQLITE_DEBUG