compel/src/main.c: rm useless init

1 Since all the fields are now initialized to zeroes,
  we can just say ={};

2 Since this is static, it is initialized to zeroes anyway,
  but from my POV being explicit about it is better.

travis-ci: success for More polishing for compel cli
Signed-off-by: Kir Kolyshkin <kir@openvz.org>
Acked-by: Cyrill Gorcunov <gorcunov@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@virtuozzo.com>
Signed-off-by: Andrei Vagin <avagin@virtuozzo.com>

compel/src/main.c

@@ -51,11 +51,7 @@ static const compel_cflags_t compel_cflags[] = {
 	},
 };
 
-piegen_opt_t opts = {
-	.input_filename		= NULL,
-	.output_filename	= NULL,
-	.fout			= NULL,
-};
+piegen_opt_t opts = {};
 
 static int piegen(void)
 {