Keep stack in FromLuaMulti::from_stack_multi

Author: khvzak

src/multi.rs

@@ -287,10 +287,7 @@ macro_rules! impl_tuple {
             }
 
             #[inline]
-            unsafe fn from_stack_multi(nvals: c_int, lua: &RawLua) -> Result<Self> {
-                if nvals > 0 {
-                    ffi::lua_pop(lua.state(), nvals);
-                }
+            unsafe fn from_stack_multi(_nvals: c_int, _lua: &RawLua) -> Result<Self> {
                 Ok(())
             }
         }

src/traits.rs

@@ -128,10 +128,6 @@ pub trait FromLuaMulti: Sized {
         for idx in 0..nvals {
             values.push_back(lua.stack_value(-nvals + idx, None));
         }
-        if nvals > 0 {
-            // It's safe to clear the stack as all references moved to ref thread
-            ffi::lua_pop(lua.state(), nvals);
-        }
         Self::from_lua_multi(values, lua.lua())
     }