Correct the definition of DICT_SYS_INDEXES_NAME_FIELD.

When row_merge_drop_temp_indexes() was reworked to drop the indexes
via the data dictionary cache, the code was broken because it would
read the index name from the wrong field.

storage/innodb_plugin/ChangeLog

+2010-04-22	The InnoDB Team
+
+	* include/dict0boot.h, dict/dict0boot.c:
+	Fix a bug that prevented the crash recovery of fast CREATE INDEX
+	from dropping partially created indexes.
+
 2010-04-21	The InnoDB Team
 
 	* btr/btr0btr.c:

storage/innodb_plugin/dict/dict0boot.c

@@ -368,8 +368,8 @@ dict_boot(void)
 #if DICT_SYS_INDEXES_TYPE_FIELD != 4 + 2
 #error "DICT_SYS_INDEXES_TYPE_FIELD != 4 + 2"
 #endif
-#if DICT_SYS_INDEXES_NAME_FIELD != 1 + 2
-#error "DICT_SYS_INDEXES_NAME_FIELD != 1 + 2"
+#if DICT_SYS_INDEXES_NAME_FIELD != 2 + 2
+#error "DICT_SYS_INDEXES_NAME_FIELD != 2 + 2"
 #endif
 
 	table->id = DICT_INDEXES_ID;

storage/innodb_plugin/include/dict0boot.h

@@ -137,7 +137,7 @@ clustered index */
 #define DICT_SYS_INDEXES_PAGE_NO_FIELD	 8
 #define DICT_SYS_INDEXES_SPACE_NO_FIELD	 7
 #define DICT_SYS_INDEXES_TYPE_FIELD	 6
-#define DICT_SYS_INDEXES_NAME_FIELD	 3
+#define DICT_SYS_INDEXES_NAME_FIELD	 4
 
 /* When a row id which is zero modulo this number (which must be a power of
 two) is assigned, the field DICT_HDR_ROW_ID on the dictionary header page is