140/376: Make hook shutdown more reliable

[Ludovic Court�s]

civodul pushed a commit to tag 1.8
in repository guix.

commit 029424d17d0860e4423bbd409f22104f55ea65e0
Author: Eelco Dolstra <eelco.dols...@logicblox.com>
Date:   Tue Aug 19 17:44:59 2014 +0200

    Make hook shutdown more reliable
---
 src/libstore/build.cc |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/src/libstore/build.cc b/src/libstore/build.cc
index 232059e..aa539a1 100644
--- a/src/libstore/build.cc
+++ b/src/libstore/build.cc
@@ -617,7 +617,6 @@ HookInstance::HookInstance()
     });
 
     pid.setSeparatePG(true);
-    pid.setKillSignal(SIGTERM);
     fromHook.writeSide.close();
     toHook.readSide.close();
 }
@@ -626,6 +625,7 @@ HookInstance::HookInstance()
 HookInstance::~HookInstance()
 {
     try {
+        toHook.writeSide.close();
         pid.kill(true);
     } catch (...) {
         ignoreException();