Fix segfault on 64-bit arches - Upstream Debian bug: 779520

References:

• https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=779520
• https://github.com/tufei/dvb-apps/pull/2

Sources:

• https://bugs.debian.org/cgi-bin/bugreport.cgi?att=1;bug=779520;filename=bug779520.patch;msg=17
• https://patch-diff.githubusercontent.com/raw/tufei/dvb-apps/pull/2.patch