util.sql: Handle failure to detect connection encoding
Silences a luacheck warning about an unused variable
--- a/util/sql.lua Mon Dec 23 21:09:38 2019 +0100
+++ b/util/sql.lua Mon Dec 23 21:13:27 2019 +0100
@@ -335,6 +335,9 @@
local ok, actual_charset = self:transaction(function ()
return self:select"SHOW SESSION VARIABLES LIKE 'character_set_client'";
end);
+ if not ok then
+ return false, "Failed to detect connection encoding";
+ end
local charset_ok = true;
for row in actual_charset do
if row[2] ~= charset then