From 6d8753e5a853a4d5a3aa01dea8407d6af8365d82 Mon Sep 17 00:00:00 2001
From: uramer <antonuramer@gmail.com>
Date: Sat, 21 Dec 2024 16:47:19 +0100
Subject: [PATCH] Fix crash if someone evil calls the .lines method on a
 non-file

---
 apps/openmw/mwlua/vfsbindings.cpp | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/apps/openmw/mwlua/vfsbindings.cpp b/apps/openmw/mwlua/vfsbindings.cpp
index e49a8718f5..4a71a29581 100644
--- a/apps/openmw/mwlua/vfsbindings.cpp
+++ b/apps/openmw/mwlua/vfsbindings.cpp
@@ -190,7 +190,9 @@ namespace MWLua
                 return seek(lua, self, std::ios_base::cur, off);
             });
         handle["lines"] = [](sol::this_state lua, sol::object self) {
-            return sol::as_function([lua, self]() {
+            return sol::as_function([lua, self]() -> sol::object {
+                if (!self.is<FileHandle*>())
+                    return sol::nil;
                 FileHandle* handle = self.as<FileHandle*>();
                 validateFile(*handle);
                 return readLineFromFile(lua, *handle);