oltp_insert.lua: fix for opt.use_file - 3

Author: rockeet

src/lua/oltp_common.lua

@@ -525,7 +525,8 @@ end
 
 function execute_delete_inserts()
    local tnum = get_table_num()
-   local file_c_val, file_pad_val
+   local file_c_val
+   local file_pad_val
 
    for i = 1, sysbench.opt.delete_inserts do
       local id = get_id()

src/lua/oltp_insert.lua

@@ -43,7 +43,8 @@ end
 function event()
    local table_name = "sbtest" .. sysbench.rand.uniform(1, sysbench.opt.tables)
    local k_val = sysbench.rand.default(1, sysbench.opt.table_size)
-   local c_val, pad_val
+   local c_val
+   local pad_val
 
    if sysbench.opt.use_file then
       c_val, pad_val = get_str_value()