Add WTAP_ENCAP_RUBY_MARSHAL to the table of encapsulation names.

Change-Id: If7362bc4e1da3c3dc22df08b52c7cadcd43d3b81
Reviewed-on: https://code.wireshark.org/review/28886
Reviewed-by: Guy Harris <guy@alum.mit.edu>

wiretap/wtap.c

@@ -917,6 +917,9 @@ static struct encap_type_info encap_table_base[] = {
 
 	/* WTAP_ENCAP_DPAUXMON */
 	{ "DisplayPort AUX channel with Unigraf pseudo-header", "dpauxmon" },
+
+	/* WTAP_ENCAP_RUBY_MARSHAL */
+	{ "Ruby marshal object", "ruby_marshal" },
 };
 
 WS_DLL_LOCAL