[source] tools/expat: Update to 2.2.4

[LEDE Commits]

hauke pushed a commit to source.git, branch master:
https://git.lede-project.org/b0f26243feea1b6f4341d7a2e08e9650089ed674

commit b0f26243feea1b6f4341d7a2e08e9650089ed674
Author: Daniel Engberg <daniel.engberg.lists at pyret.net>
AuthorDate: Wed Sep 6 11:56:15 2017 +0200

    tools/expat: Update to 2.2.4
    
    Update (lib)expat to 2.2.4
    
    Signed-off-by: Daniel Engberg <daniel.engberg.lists at pyret.net>
---
 tools/expat/Makefile | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/tools/expat/Makefile b/tools/expat/Makefile
index 1f856c9..74ecbee 100644
--- a/tools/expat/Makefile
+++ b/tools/expat/Makefile
@@ -8,10 +8,10 @@
 include $(TOPDIR)/rules.mk
 
 PKG_NAME:=expat
-PKG_VERSION:=2.2.3
+PKG_VERSION:=2.2.4
 
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.bz2
-PKG_HASH:=b31890fb02f85c002a67491923f89bda5028a880fd6c374f707193ad81aace5f
+PKG_HASH:=03ad85db965f8ab2d27328abcf0bc5571af6ec0a414874b2066ee3fdd372019e
 PKG_SOURCE_URL:=@SF/expat
 
 HOST_BUILD_PARALLEL:=1