Bug #30284 spatial key corruption.

SPATIAL key is fine actually, but the chk_key() function
mistakenly returns error. It tries to compare checksums
of btree and SPATIAL keys while the checksum for the SPATIAL isn't
calculated (always 0). Same thing with FULLTEXT keys is handled
using full_text_keys counter, so fixed by counting both
SPATIAL and FULLTEXT keys in that counter.

myisam/mi_check.c

@@ -454,7 +454,7 @@ int chk_key(MI_CHECK *param, register MI_INFO *info)
 
     if ((!(param->testflag & T_SILENT)))
       printf ("- check data record references index: %d\n",key+1);
-    if (keyinfo->flag & HA_FULLTEXT)
+    if (keyinfo->flag & (HA_FULLTEXT | HA_SPATIAL))
       full_text_keys++;
     if (share->state.key_root[key] == HA_OFFSET_ERROR &&
 	(info->state->records == 0 || keyinfo->flag & HA_FULLTEXT))

mysql-test/r/gis.result

@@ -730,4 +730,12 @@ select geomfromtext(col9,col89) as a from t1;
 a
 NULL
 DROP TABLE t1;
+create table t1(col1 geometry not null,col15 geometrycollection not
+null,spatial index(col15),index(col1(15)))engine=myisam;
+insert into t1 set col15 = GeomFromText('POINT(6 5)');
+insert into t1 set col15 = GeomFromText('POINT(6 5)');
+check table t1 extended;
+Table	Op	Msg_type	Msg_text
+test.t1	check	status	OK
+drop table t1;
 End of 4.1 tests

mysql-test/t/gis.test

@@ -427,4 +427,15 @@ INSERT INTO `t1` VALUES ('','0000-00-00');
 select geomfromtext(col9,col89) as a from t1;
 DROP TABLE t1;
 
+#
+# Bug #30284 spatial key corruption 
+#
+
+create table t1(col1 geometry not null,col15 geometrycollection not
+null,spatial index(col15),index(col1(15)))engine=myisam;
+insert into t1 set col15 = GeomFromText('POINT(6 5)');
+insert into t1 set col15 = GeomFromText('POINT(6 5)');
+check table t1 extended;
+drop table t1;
+
 --echo End of 4.1 tests