WL#1163 (To make spatial code optional)

a couple of lines added to make code easier to read


myisam/mi_key.c:
  'autodocumenting' code added
myisam/mi_open.c:
  'autodocumenting' code added

myisam/mi_key.c

@@ -48,6 +48,8 @@ uint _mi_make_key(register MI_INFO *info, uint keynr, uchar *key,
     */
 #ifdef HAVE_SPATIAL
     return sp_make_key(info,keynr,key,record,filepos);
+#else
+    DBUG_ASSERT(0); /* mi_open should check that this never happens*/
 #endif
   }
 

myisam/mi_open.c

@@ -734,6 +734,8 @@ static void setup_key_functions(register MI_KEYDEF *keyinfo)
 #ifdef HAVE_RTREE_KEYS
     keyinfo->ck_insert = rtree_insert;
     keyinfo->ck_delete = rtree_delete;
+#else
+    DBUG_ASSERT(0); /* mi_open should check it never happens */
 #endif
   }
   else