More disciplined use of 'getstr' and 'tsslen'

We may want to add other string variants in the future; this change
documents better where the code may need to handle those variants.

1 files changed, 2 insertions, 2 deletions

diff --git a/lapi.c b/lapi.c
index 34e64af1..332e97d1 100644
--- a/lapi.c
+++ b/lapi.c
@@ -417,9 +417,9 @@ LUA_API const char *lua_tolstring (lua_State *L, int idx, size_t *len) {
     o = index2value(L, idx);  /* previous call may reallocate the stack */
   }
   if (len != NULL)
-    *len = vslen(o);
+    *len = tsslen(tsvalue(o));
   lua_unlock(L);
-  return svalue(o);
+  return getstr(tsvalue(o));
 }