[PATCH 3/4] app/testpmd: check for no arguments

[Kevin Traynor <ktraynor@redhat.com>]

For the case where token is NULL, there are no arguments
and split_str[0] is used uninitialized.

Check counter to ensure there is a token and return error if not.

Fixes: 601576ae6699 ("app/testpmd: add prio-tc map in DCB command")
Cc: stable@dpdk.org

Signed-off-by: Kevin Traynor <ktraynor@redhat.com>
---
 app/test-pmd/cmdline.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/app/test-pmd/cmdline.c b/app/test-pmd/cmdline.c
index c33c66f327..ab85f4e0ad 100644
--- a/app/test-pmd/cmdline.c
+++ b/app/test-pmd/cmdline.c
@@ -3570,4 +3570,9 @@ parse_dcb_token_value(char *token_str,
 	} while (1);
 
+	if (split_num == 0) {
+		fprintf(stderr, "Bad Argument: no arguments provided\n");
+		return -1;
+	}
+
 	/* parse fixed parameter "pfc-en" first. */
 	token = split_str[0];
-- 
2.53.0