dvblastctl: Remove local variable that is shadowing a global one.

Commit 102b40d2 added global cleanup function and made
i_fd variable global. Unfortunately i_fd definition was
not removed from main() so the cleanup function wasn't
really doing its job. The fix is simple just remove
the local definition of i_fd.
Signed-Off-By: Georgi Chorbadzhiyski <gf@unixsol.org>

dvblastctl.c

@@ -235,7 +235,7 @@ int main( int i_argc, char **ppsz_argv )
 {
     char *client_socket_tmpl = "dvblastctl.clientsock.XXXXXX";
     char *psz_srv_socket = NULL;
-    int i_fd, i;
+    int i;
     char *p_cmd, *p_arg1 = NULL, *p_arg2 = NULL;
     ssize_t i_size;
     struct sockaddr_un sun_client, sun_server;