Add the nd_print_invalid() function

It prints " (invalid)", used for malformed or corrupted packets.

Moreover:
Update CONTRIBUTING.

1 files changed, 6 insertions, 4 deletions

diff --git a/util-print.c b/util-print.c
index 45da51f7..5a8c8fe5 100644
--- a/util-print.c
+++ b/util-print.c
@@ -57,12 +57,8 @@
 #include "ascii_strcasecmp.h"
 #include "timeval-operations.h"
 
-/* invalid string to print '(invalid)' for malformed or corrupted packets */
-const char istr[] = " (invalid)";
-
 #define TOKBUFSIZE 128
 
-
 enum date_flag { WITHOUT_DATE = 0, WITH_DATE = 1 };
 enum time_flag { UTC_TIME = 0, LOCAL_TIME = 1 };
 
@@ -444,6 +440,12 @@ void nd_print_trunc(netdissect_options *ndo)
 	ND_PRINT(" [|%s]", ndo->ndo_protocol);
 }
 
+/* Print the invalid string */
+void nd_print_invalid(netdissect_options *ndo)
+{
+	ND_PRINT(" (invalid)");
+}
+
 /*
  *  this is a generic routine for printing unknown data;
  *  we pass on the linefeed plus indentation string to