libs/nixio: allow calls to nixio.util.consume() with no iterator given

diff --git a/libs/nixio/lua/nixio/util.lua b/libs/nixio/lua/nixio/util.lua
index d83209aff63edad2b6128e79d9e7b1b8f703dbdc..ecefb4c97f0ca606665c43cb6ffb97df8462ecb0 100644 (file)
--- a/libs/nixio/lua/nixio/util.lua
+++ b/libs/nixio/lua/nixio/util.lua
@@ -28,8 +28,10 @@ local ZBUG = uname.sysname == "Linux" and uname.release:sub(1, 3) == "2.4"
 
 function consume(iter, append)
        local tbl = append or {}
-       for obj in iter do
-               tbl[#tbl+1] = obj
+       if iter then
+               for obj in iter do
+                       tbl[#tbl+1] = obj
+               end
        end
        return tbl
 end