TCP: Fix an invalid check

Fix this cppcheck warning:
print-tcp.c:711:20: warning: Checking if unsigned expression 'length'
is less than zero. [unsignedLessThanZero]
        if (length <= 0)
                   ^

diff --git a/print-tcp.c b/print-tcp.c
index 86b70511e63d2ee1808b507f5032b1db06f2d638..d9ca4a34b940c1a2d6058dde91fcedb28e752265 100644 (file)
--- a/print-tcp.c
+++ b/print-tcp.c
@@ -708,7 +708,7 @@ tcp_print(netdissect_options *ndo,
          */
         ND_PRINT(", length %u", length);
 
-        if (length <= 0)
+        if (length == 0)
                 return;
 
         /*