From d3f8873469f5986e074dff532c3fe84a2d5ef2d6 Mon Sep 17 00:00:00 2001
From: Christian Brabandt <cb@256bit.org>
Date: Tue, 29 Aug 2017 12:47:29 +0200
Subject: [PATCH] async: fix error, when mq is not enabled

fixes #1551
---
 autoload/airline/async.vim | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/autoload/airline/async.vim b/autoload/airline/async.vim
index f8d9d75..dc1cdc1 100644
--- a/autoload/airline/async.vim
+++ b/autoload/airline/async.vim
@@ -15,16 +15,16 @@ function! s:untracked_output(dict, buf)
 endfunction
 
 function! s:mq_output(buf, file)
-  let buf=''
+  let buf=a:buf
   if !empty(a:buf)
     if a:buf is# 'no patches applied' ||
       \ a:buf =~# "unknown command 'qtop'"
       let buf = ''
-    elseif exists("b:mq") && b:mq isnot# a:buf
+    elseif exists("b:mq") && b:mq isnot# buf
       " make sure, statusline is updated
       unlet! b:airline_head
     endif
-    let b:mq = a:buf
+    let b:mq = buf
   endif
   if has_key(s:mq_jobs, a:file)
     call remove(s:mq_jobs, a:file)