Fixed io.lines() bug

In Lua 5.2 io.lines() has to be used to iterate until EOF, otherwise
the fd will not be closed and eventually tons of naughty messages
will start to pop up saying that no more fd can be opened.

Signed-off-by: Arvydas Sidorenko <asido4@gmail.com>
Signed-off-by: Adrian C. (anrxc) <anrxc@sysphere.org>

widgets/cpu.lua

@@ -7,7 +7,7 @@
 
 -- {{{ Grab environment
 local ipairs = ipairs
-local io = { lines = io.lines }
+local io = { open = io.open }
 local setmetatable = setmetatable
 local math = { floor = math.floor }
 local table = { insert = table.insert }
@@ -15,6 +15,7 @@ local string = {
     sub = string.sub,
     gmatch = string.gmatch
 }
+local naught = require("naughty")
 -- }}}
 
 
@@ -33,7 +34,8 @@ local function worker(format)
     local cpu_lines = {}
 
     -- Get CPU stats
-    for line in io.lines("/proc/stat") do
+    local fd = io.open("/proc/stat")
+    for line in fd:lines() do
         if string.sub(line, 1, 3) ~= "cpu" then break end
 
         cpu_lines[#cpu_lines+1] = {}
@@ -42,6 +44,7 @@ local function worker(format)
             table.insert(cpu_lines[#cpu_lines], i)
         end
     end
+    fd:close()
 
     -- Ensure tables are initialized correctly
     for i = #cpu_total + 1, #cpu_lines do

widgets/raid.lua

@@ -4,7 +4,7 @@
 -----------------------------------------------------
 
 -- {{{ Grab environment
-local io = { lines = io.lines }
+local io = { open = io.open }
 local setmetatable = setmetatable
 local string = {
     len = string.len,
@@ -33,7 +33,8 @@ local function worker(format, warg)
     }
 
     -- Linux manual page: md(4)
-    for line in io.lines("/proc/mdstat") do
+    local fd = io.open("/proc/mdstat")
+    for line in fd:lines() do
         if mddev[warg]["found"] then
             local updev = string.match(line, "%[[_U]+%]")
 
@@ -50,6 +51,7 @@ local function worker(format, warg)
             end
         end
     end
+    fd:close()
 
     return {mddev[warg]["assigned"], mddev[warg]["active"]}
 end