src/ldebug.js: Don't modify TValues on stack

1 files changed, 2 insertions, 3 deletions

diff --git a/src/ldebug.js b/src/ldebug.js
index e0e2366..7de5cdc 100644
--- a/src/ldebug.js
+++ b/src/ldebug.js
@@ -152,9 +152,8 @@ const lua_setlocal = function(L, ar, n) {
     let name = local.name;
     let pos = local.pos;
     if (name) {
-        L.stack[pos].type = L.stack[L.top - 1].type;
-        L.stack[pos].value = L.stack[L.top - 1].value;
-        L.top--;  /* pop value */
+        L.stack[pos] = L.stack[L.top - 1];
+        delete L.stack[--L.top];  /* pop value */
     }
     swapextra(L);
     return name;