Patch by Robert Scheck <robert@fedoraproject.org> for iftop >= 1.0pre4 which fixes

the regression introduced with 1.0pre4 resulting in a broken MAC address output.

This patch was proposed to upstream at Mon, 20 Jan 2014 01:58:57 +0100. See also

the following links for details:

 - https://bugzilla.redhat.com/show_bug.cgi?id=1063298

 - https://bugzilla.redhat.com/show_bug.cgi?id=1165349

--- iftop-1.0pre4/iftop.c			2014-01-19 21:21:19.000000000 +0100

+++ iftop-1.0pre4/iftop.c.mac-address		2014-01-20 01:55:16.000000000 +0100

@@ -55,7 +55,7 @@

 /* ethernet address of interface. */

 int have_hw_addr = 0;

-char if_hw_addr[6];    

+unsigned char if_hw_addr[6];    

 /* IP address of interface */

 int have_ip_addr = 0;