diff --git a/client/deps/liblua/lgc.c b/client/deps/liblua/lgc.c
index 6b407cc86..6d39bb643 100644
--- a/client/deps/liblua/lgc.c
+++ b/client/deps/liblua/lgc.c
@@ -490,17 +490,25 @@ static lu_mem traverseLclosure(global_State *g, LClosure *cl) {
 
 
 static lu_mem traversestack(global_State *g, lua_State *th) {
+    int n = 0;
     StkId o = th->stack;
     if (o == NULL)
         return 1;  /* stack not completely built yet */
-    for (; o < th->top; o++)
+
+    for (; o < th->top; o++) /* mark live elements in the stack */
         markvalue(g, o);
+
     if (g->gcstate == GCSatomic) {  /* final traversal? */
         StkId lim = th->stack + th->stacksize;  /* real end of stack */
         for (; o < lim; o++)  /* clear not-marked stack slice */
             setnilvalue(o);
+
+    } else {  /* count call infos to compute size */
+        CallInfo *ci;
+        for (ci = &th->base_ci; ci != th->ci; ci = ci->next)
+        n++;
     }
-    return sizeof(lua_State) + sizeof(TValue) * th->stacksize;
+  return sizeof(lua_State) + sizeof(TValue) * th->stacksize + sizeof(CallInfo) * n;
 }