[Minor] Mime_types: Allow empty filename

diff --git a/src/plugins/lua/mime_types.lua b/src/plugins/lua/mime_types.lua
index e13d535b4aba9a99de002626a73e9ba31d33d6ec..e9a10bc3c26097a152ccd3ec9f79f1d4fd7c8271 100644 (file)
--- a/src/plugins/lua/mime_types.lua
+++ b/src/plugins/lua/mime_types.lua
@@ -821,7 +821,7 @@ local full_extensions_map = {
 
 local function check_mime_type(task)
   local function gen_extension(fname)
-    local parts = lua_util.str_split(fname, '.')
+    local parts = lua_util.str_split(fname or '', '.')
 
     local ext = {}
     for n = 1, 2 do