procd: update to latest git HEAD

e7bb2c8 upgraded: define __GNU_SOURCE

Signed-off-by: Matthias Schiffer <mschiffer@universe-factory.net>

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:=2017-05-29
-PKG_SOURCE_VERSION:=992b796204caf5b0290ea4a1246b43b353b6c1d7
-PKG_MIRROR_HASH:=effecf66ef6a7396dd26d54a5d232b4a895d9fe7aaca83063aaffc7b39a051d5
+PKG_SOURCE_DATE:=2017-05-30
+PKG_SOURCE_VERSION:=e7bb2c8d631862e1535cf6eead18387f02a69ad2
+PKG_MIRROR_HASH:=97bb96aba2db4730fd8b2edeb15f94e18caa6017d9e50a73777c14532154cade
 CMAKE_INSTALL:=1
 
 PKG_LICENSE:=GPL-2.0