[source] iperf3: update to version 3.1.4

[LEDE Commits]

blogic pushed a commit to source.git, branch master:
https://git.lede-project.org/9c91335dc7ff39847d5ae949edf77cdb29cd6176

commit 9c91335dc7ff39847d5ae949edf77cdb29cd6176
Author: Christian Lamparter <chunkeey at googlemail.com>
AuthorDate: Mon Nov 7 18:10:10 2016 +0100

    iperf3: update to version 3.1.4
    
    "This release fixes a few minor bugs, including a
    (non-security-impacting) buffer overflow fix ported
    from upstream cjson."
    <http://software.es.net/iperf/news.html#iperf-3-1-4-released>
    
    Signed-off-by: Christian Lamparter <chunkeey at gmail.com>
---
 package/network/utils/iperf3/Makefile | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/package/network/utils/iperf3/Makefile b/package/network/utils/iperf3/Makefile
index d68ac2b..5283842 100644
--- a/package/network/utils/iperf3/Makefile
+++ b/package/network/utils/iperf3/Makefile
@@ -8,12 +8,12 @@
 include $(TOPDIR)/rules.mk
 
 PKG_NAME:=iperf
-PKG_VERSION:=3.1.3
+PKG_VERSION:=3.1.4
 PKG_RELEASE:=1
 
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.gz
 PKG_SOURCE_URL:=http://downloads.es.net/pub/iperf
-PKG_MD5SUM:=3fb849c24a2370af60687cf673b67bc7
+PKG_MD5SUM:=db61d70ac62003ebe0bf15496bd8c4b3c4b728578a44d0a1a88fcf8afc0e8f76
 
 PKG_MAINTAINER:=Felix Fietkau <nbd at nbd.name>
 PKG_LICENSE:=BSD-3-Clause