better fix for OPTIMIZE bug

sql/ha_myisam.cc

@@ -617,16 +617,12 @@ int ha_myisam::repair(THD *thd, MI_CHECK &param, bool optimize)
 			       STATE_CRASHED_ON_REPAIR);
       file->update|=HA_STATE_CHANGED | HA_STATE_ROW_CHANGED;
     }
-    /* Here we need to make file->save_state and file->s->state.state
-       equal. Unfortunately, sometime table comes locked here (so
-       file->save_state represents actual table state), and sometime
-       unlocked (and actual is file->s->state.state instead). This all
-       is very confusing, and should be streamlined (TODO).
-     */
-    if (file->state == & file->save_state)
-      file->s->state.state=file->save_state;
-    else
-      file->save_state=file->s->state.state;
+    /*
+      the following 'if', thought conceptually wrong,
+      is a useful optimization nevertheless.
+    */
+    if (file->state != &file->s->state.state);
+      file->s->state.state = *file->state;
     if (file->s->base.auto_key)
       update_auto_increment_key(&param, file, 1);
     if (optimize_done)