From 325e0b0e33b0a6b9ca830c9d43777d0f5564d26f Mon Sep 17 00:00:00 2001
From: lethosor <lethosor@gmail.com>
Date: Wed, 31 Jan 2018 09:57:11 -0500
Subject: [PATCH] binpatch.lua: check for empty patches

---
 library/lua/binpatch.lua | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/library/lua/binpatch.lua b/library/lua/binpatch.lua
index d8e95b29f..0cae97e5b 100644
--- a/library/lua/binpatch.lua
+++ b/library/lua/binpatch.lua
@@ -17,6 +17,7 @@ local function load_patch(name)
 
     local old_bytes = {}
     local new_bytes = {}
+    local has_bytes = false
 
     for line in file:lines() do
         if string.match(line, '^%x+:') then
@@ -34,10 +35,14 @@ local function load_patch(name)
 
             old_bytes[offset] = oldv
             new_bytes[offset] = newv
+            has_bytes = true
         end
     end
 
     file:close()
+    if not has_bytes then
+        return nil, 'no patch bytes found'
+    end
     return { name = name, old_bytes = old_bytes, new_bytes = new_bytes }
 end