From 9df9f5ff58714703c3d4e19de888b85e06ef58c6 Mon Sep 17 00:00:00 2001
From: nuoun <10226424+nuoun@users.noreply.github.com>
Date: Fri, 13 Dec 2024 22:56:02 +0100
Subject: [PATCH] Fixes a LuaJIT stack leak on broken generate function error
 return (#7921)

---
 src/common/dsp/WavetableScriptEvaluator.cpp | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/common/dsp/WavetableScriptEvaluator.cpp b/src/common/dsp/WavetableScriptEvaluator.cpp
index 8cf30baf249..f14d3a530f5 100644
--- a/src/common/dsp/WavetableScriptEvaluator.cpp
+++ b/src/common/dsp/WavetableScriptEvaluator.cpp
@@ -84,6 +84,7 @@ struct LuaWTEvaluator::Details
             if (storage)
                 storage->reportError("Unable to locate generate function",
                                      "Wavetable Script Evaluator");
+            lua_pop(L, 1); // pop the generate non-function
             return std::nullopt;
         }
         Surge::LuaSupport::setSurgeFunctionEnvironment(L);