Don't use debug.getmetatable, it leads to crashes.

Fix https://is.gd/1CZoSQ

1 files changed, 4 insertions, 3 deletions

diff --git a/init.lua b/init.lua
index 6c55905..cc83695 100644
--- a/init.lua
+++ b/init.lua
@@ -1,9 +1,10 @@
 local function file_exists(path)
 	local f = io.open(path)
-	if f ~= nil then
-		debug.getmetatable(f)["__gc"] = io.close
+	local out = f ~= nil
+	if out then
+		io.close(f)
 	end
-	return f ~= nil
+	return out
 end
 
 local function open_rej_file(file)