[commit: ghc] wip/nfs-locking: Escape echo quotes. (9024712)

[git at git.haskell.org]

Repository : ssh://git@git.haskell.org/ghc

On branch  : wip/nfs-locking
Link       : http://ghc.haskell.org/trac/ghc/changeset/902471256bf5aee2974afb968f0cf5bdbd8cae78/ghc

>---------------------------------------------------------------

commit 902471256bf5aee2974afb968f0cf5bdbd8cae78
Author: Andrey Mokhov <andrey.mokhov at gmail.com>
Date:   Thu Jan 7 10:54:09 2016 +0000

    Escape echo quotes.
    
    See #110. [skip ci]


>---------------------------------------------------------------

902471256bf5aee2974afb968f0cf5bdbd8cae78
 .appveyor.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.appveyor.yml b/.appveyor.yml
index a5763cc..f74c459 100644
--- a/.appveyor.yml
+++ b/.appveyor.yml
@@ -14,5 +14,5 @@ install:
 
 build_script:
     - bash -lc "cd /home/ghc && ./boot"
-    - bash -lc "cd /home/ghc && echo "" | ./configure --enable-tarballs-autodownload"
+    - bash -lc "cd /home/ghc && echo \"\" | ./configure --enable-tarballs-autodownload"
     - bash -lc "cd /home/ghc && ./shake-build/build.bat -j --no-progress"