dnp3: fix probing test not using final null in string

diff --git a/src/app-layer-dnp3.c b/src/app-layer-dnp3.c
index 0145214b2891f8f86133f936721cf5a34c1b0139..f5b42cc1afd69aad6d81408ce4913282cdb3c1f8 100644 (file)
--- a/src/app-layer-dnp3.c
+++ b/src/app-layer-dnp3.c
@@ -2102,7 +2102,7 @@ static int DNP3ProbingParserTest(void)
 
     /* Send a banner. */
     char mybanner[] = "Welcome to DNP3 SCADA.";
-    FAIL_IF(DNP3ProbingParser(NULL, STREAM_TOSERVER, (uint8_t *)mybanner, sizeof(mybanner), &rdir) != ALPROTO_DNP3);
+    FAIL_IF(DNP3ProbingParser(NULL, STREAM_TOSERVER, (uint8_t *)mybanner, sizeof(mybanner) - 1, &rdir) != ALPROTO_DNP3);
 
     PASS;
 }