memif: coverity fix

Change-Id: I2b14e2a035a37b04816aac1e610146be58ad1e92
Signed-off-by: Jakub Grajciar <jgrajcia@cisco.com>

diff --git a/src/plugins/memif/memif.c b/src/plugins/memif/memif.c
index 63f72a3..e8fb0e9 100644 (file)
--- a/src/plugins/memif/memif.c
+++ b/src/plugins/memif/memif.c
@@ -680,8 +680,10 @@ memif_socket_filename_add_del (u8 is_add, u32 sock_id, u8 * sock_filename)
        }
 
       /* check dir existance and access rights for effective user/group IDs */
-      if (faccessat ( /* ignored */ -1, dir, F_OK | R_OK | W_OK, AT_EACCESS) <
-         0)
+      if ((dir == NULL)
+         ||
+         (faccessat ( /* ignored */ -1, dir, F_OK | R_OK | W_OK, AT_EACCESS)
+          < 0))
        {
          vec_free (dir);
          return VNET_API_ERROR_INVALID_ARGUMENT;