Use -1 as file descriptor "not open" value instead of 0
[debian/gnuradio] / gr-video-sdl /
drwxr-xr-x   ..
-rw-r--r-- 330 .gitignore
-rw-r--r-- 921 Makefile.am
-rw-r--r-- 265 gnuradio-video-sdl.pc.in
drwxr-xr-x - src