Set retval to 1 if we get an error, to make life easier for folks

who wrap dvgrab to tell if something went wrong (rhbz #486061).

Signed-off-by: Jarod Wilson <jarod@redhat.com>

--- dvgrab-3.4/main.cc.orig	2009-03-19 16:12:55.417171454 -0400

+++ dvgrab-3.4/main.cc	2009-03-19 16:12:22.321109256 -0400

@@ -93,6 +93,8 @@ int rt_raisepri (int pri)

 int main( int argc, char *argv[] )

 {

+	int ret = 0;

+

 	fcntl( fileno( stderr ), F_SETFL, O_NONBLOCK );

 	try

 	{

@@ -137,13 +139,15 @@ int main( int argc, char *argv[] )

 	{

 		fprintf( stderr, "Error: %s\n", s.c_str() );

 		fflush( stderr );

+		ret = 1;

 	}

 	catch ( ... )

 	{

 		fprintf( stderr, "Error: unknown\n" );

 		fflush( stderr );

+		ret = 1;

 	}

 	fprintf( stderr, "\n" );

-	return 0;

+	return ret;

 }