[Minor] Fix zero return value

diff --git a/lualib/lua_squeeze_rules.lua b/lualib/lua_squeeze_rules.lua
index d351c5e20e8e16a4c4697e51cd2dedbb870c5a70..1f442f8193ddf04216760f020ffac359675edd93 100644 (file)
--- a/lualib/lua_squeeze_rules.lua
+++ b/lualib/lua_squeeze_rules.lua
@@ -47,7 +47,11 @@ local function gen_lua_squeeze_function(order)
           end
         elseif type(first) == 'number' then
           table.remove(ret, 1)
-          task:insert_result(sym, first, ret)
+
+          if first ~= 0 then
+            task:insert_result(sym, first, ret)
+            end
+          end
         else
           task:insert_result(sym, 1.0, ret)
         end