net/colo-compare.c: Fix incorrect return when input wrong size

Signed-off-by: Zhang Chen <chen.zhang@intel.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/net/colo-compare.c b/net/colo-compare.c
index 1225f40e41..b966e7e514 100644
--- a/net/colo-compare.c
+++ b/net/colo-compare.c
@@ -807,7 +807,7 @@ static int compare_chr_send(CompareState *s,
     }
 
     if (!size) {
-        return 0;
+        return -1;
     }
 
     entry = g_slice_new(SendEntry);