FreeBSD Port: net-mgmt/bandwidthd

[le_top]

The date shown on the graphs is unrelated to the current date/time and 
seems to change for each report generation.

Issue identified on the SG-1000 platform running
2.4.0-BETA (arm)
built on Sat Jul 08 11:20:00 CDT 2017
FreeBSD 11.0-RELEASE-p10

uname -a output:
FreeBSD <host> 11.0-RELEASE-p11 FreeBSD 11.0-RELEASE-p11 #0 
5e79cd177be(RELENG_2_4): Thu Jul 13 12:06:12 CDT 2017 
root at buildbot2.netgate.com:/xbuilder/crossbuild/work/obj-ufw-armv6/arm.armv6/builder/factory/tmp/FreeBSD-src/sys/pfSense-uFW 
arm

Initially reported here:

https://redmine.pfsense.org/issues/7692
https://sourceforge.net/p/bandwidthd/bugs/50/


This looks like a typing issue when calling a GD library function, but I 
do not have a build environment to check this (pfsense can not build 
code).