[Tarantool-patches] [PATCH v7 1/2] test: fix luacheck warnings in test/sql

[Sergey Bronnikov via Tarantool-patches <tarantool-patches@dev.tarantool.org>]

From: Sergey Bronnikov <sergeyb@tarantool.org>

Closes #5463

Reviewed-by: Vladislav Shpilevoy <v.shpilevoy@tarantool.org>
Reviewed-by: Igor Munkin <imun@tarantool.org>
---
 .luacheckrc                    | 2 +-
 test/sql/lua/sql_tokenizer.lua | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/.luacheckrc b/.luacheckrc
index 4b829f3dc..b0260082e 100644
--- a/.luacheckrc
+++ b/.luacheckrc
@@ -41,7 +41,7 @@ exclude_files = {
     "test/luajit-tap/**/*.lua",
     "test/replication/**/*.lua",
     "test/replication-py/**/*.lua",
-    "test/sql/**/*.lua",
+    "test/sql/*.test.lua",
     "test/swim/**/*.lua",
     "test/var/**/*.lua",
     "test/vinyl/**/*.lua",
diff --git a/test/sql/lua/sql_tokenizer.lua b/test/sql/lua/sql_tokenizer.lua
index 9922d792d..ffe4fb4e8 100644
--- a/test/sql/lua/sql_tokenizer.lua
+++ b/test/sql/lua/sql_tokenizer.lua
@@ -134,7 +134,7 @@ end
 -- @retval Token type. If the rest of the SQL request consists of
 --         spaces and comments, then return TK_EMPTY.
 local function get_next_token(context)
-    local c = ''
+    local c
     repeat
         local i = context.offset
         c = context.sql:sub(i, i)
-- 
2.25.1