tree schema CHANGE flags LYS_MODS_LATEST_*

If ::LYS_MOD_LATEST_SEARCHDIRS is set, then ::LYS_MOD_LATEST_REV must
be set too.
diff --git a/src/tree_schema.h b/src/tree_schema.h
index 40fd706..3282db3 100644
--- a/src/tree_schema.h
+++ b/src/tree_schema.h
@@ -2331,9 +2331,8 @@
  *
  * @{
  */
-#define LYS_MOD_LATEST_REV          0x01 /**< The latest revision in searchdirs was not searched yet
-                                              and this is the latest revision in the current context. */
-#define LYS_MOD_LATEST_SEARCHDIRS   0x02 /**< Searchdirs were searched and this is the latest available revision. */
+#define LYS_MOD_LATEST_REV          0x01 /**< This is the latest revision of the module in the current context. */
+#define LYS_MOD_LATEST_SEARCHDIRS   0x02 /**< This is the latest revision of the module found in searchdirs. */
 /** @} latestrevflags */
 
 /**