modules/freifunk: fix same problem

diff --git a/modules/freifunk/luasrc/model/cbi/freifunk/public_status.lua b/modules/freifunk/luasrc/model/cbi/freifunk/public_status.lua
index 56e9563..2192697 100644 (file)
--- a/modules/freifunk/luasrc/model/cbi/freifunk/public_status.lua
+++ b/modules/freifunk/luasrc/model/cbi/freifunk/public_status.lua
@@ -27,11 +27,11 @@ f:field(DummyValue, "_memtotal", translate("m_i_memory")).value =
 string.format("%.2f MB (%.0f%% %s, %.0f%% %s, %.0f%% %s)",
        tonumber(memtotal) / 1024,
        100 * memcached / memtotal,
-       translate("mem_cached") or "",
+       tostring(translate("mem_cached"), "")),
        100 * membuffers / memtotal,
-       translate("mem_buffered") or "",
+       tostring(translate("mem_buffered", "")),
        100 * memfree / memtotal,
-       translate("mem_free") or "")
+       tostring(translate("mem_free", ""))
 
 f:field(DummyValue, "_systime", translate("m_i_systemtime")).value =
 os.date("%c")