Fix for a bug with InnoDB SQL handler, when previous query failed

and an attempt is made to read previous / next value.

mysql-test/r/innodb_handler.result

@@ -139,4 +139,12 @@ a	b
 alter table t1 type=innodb;
 handler t2 read first;
 Unknown table 't2' in HANDLER
-drop table if exists t1;
+drop table t1;
+CREATE TABLE t1 (  no1 smallint(5) NOT NULL default '0',  no2 int(10) NOT NULL default '0',  PRIMARY KEY  (no1,no2)) TYPE=InnoDB;
+INSERT INTO t1 VALUES (1,274),(1,275),(2,6),(2,8),(4,1),(4,2);
+HANDLER t1 OPEN;
+HANDLER t1 READ `primary` = (1, 1000);
+no1	no2
+HANDLER t1 READ `primary` PREV;
+no1	no2
+DROP TABLE t1;

mysql-test/t/innodb_handler.test

@@ -72,5 +72,11 @@ alter table t1 type=innodb;
 --error 1109
 handler t2 read first;
 
-drop table if exists t1;
+drop table t1;
+CREATE TABLE t1 (  no1 smallint(5) NOT NULL default '0',  no2 int(10) NOT NULL default '0',  PRIMARY KEY  (no1,no2)) TYPE=InnoDB;
+INSERT INTO t1 VALUES (1,274),(1,275),(2,6),(2,8),(4,1),(4,2);
+HANDLER t1 OPEN;
+HANDLER t1 READ `primary` = (1, 1000);
+HANDLER t1 READ `primary` PREV;
+DROP TABLE t1;
 

sql/ha_innodb.cc

@@ -2579,6 +2579,9 @@ ha_innobase::general_fetch(
 	ut_a(prebuilt->trx ==
 	     (trx_t*) current_thd->transaction.all.innobase_tid);
 
+	if (table->status == STATUS_NOT_FOUND)
+	  DBUG_RETURN(HA_ERR_KEY_NOT_FOUND);
+
 	srv_conc_enter_innodb(prebuilt->trx);
 
 	ret = row_search_for_mysql((byte*)buf, 0, prebuilt, match_mode,