[LEDE-DEV] [PATCH] rtnl_flush: Error on failed write()

[Khem Raj]

Fixes
route.c:45:2: error: ignoring return value of 'write', declared with attribute warn_unused_result [-Werror=unused-result]
|   write(fd, "-1", 2);
|   ^~~~~~~~~~~~~~~~~~

Signed-off-by: Khem Raj <raj.khem at gmail.com>
---
 route.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/route.c b/route.c
index c552d1f..fc5c31e 100644
--- a/route.c
+++ b/route.c
@@ -42,7 +42,8 @@ static void rtnl_flush(void)
 	if (fd < 0)
 		return;
 
-	write(fd, "-1", 2);
+	if (write(fd, "-1", 2) < 0 )
+		perror("write");
 	close(fd);
 }
 
-- 
2.13.1