[source] procd: update to latest git HEAD

[LEDE Commits]

blogic pushed a commit to source.git, branch lede-17.01:
https://git.lede-project.org/66b071fa095ef25a234235228b52a18be92fe1aa

commit 66b071fa095ef25a234235228b52a18be92fe1aa
Author: John Crispin <john at phrozen.org>
AuthorDate: Tue Aug 1 07:02:26 2017 +0200

    procd: update to latest git HEAD
    
    3e68cdf procd: Do not leak pipe file descriptors to children
    
    Signed-off-by: John Crispin <john at phrozen.org>
---
 package/system/procd/Makefile | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/package/system/procd/Makefile b/package/system/procd/Makefile
index d195da3..7587170 100644
--- a/package/system/procd/Makefile
+++ b/package/system/procd/Makefile
@@ -12,9 +12,9 @@ PKG_RELEASE:=1
 
 PKG_SOURCE_PROTO:=git
 PKG_SOURCE_URL=$(LEDE_GIT)/project/procd.git
-PKG_SOURCE_DATE:=2017-07-12
-PKG_SOURCE_VERSION:=4dbf57a63b99f7bcaaf40679140995f80d864004
-PKG_MIRROR_HASH:=314519a40af6bda6987034b2e53f28cd2443d063aa69857bad7e8b7532f05c8d
+PKG_SOURCE_DATE:=2017-07-31
+PKG_SOURCE_VERSION:=3e68cdfdc5221d2a9268e9b30fbd474ea20b92f8
+PKG_MIRROR_HASH:=9b16f8d88ebff47ce55c09a34a68d3f4b04f7db7632d4ce73ae68b7fb8d66f73
 CMAKE_INSTALL:=1
 
 PKG_LICENSE:=GPL-2.0