bool2bit_tmpl(): Print unsupported template in failure case

Change-Id: I53c65e3a2b71e4c9b6691969d50def69b25ddfd0
diff --git a/library/Osmocom_Types.ttcn b/library/Osmocom_Types.ttcn
index ab5c098..1766a40 100644
--- a/library/Osmocom_Types.ttcn
+++ b/library/Osmocom_Types.ttcn
@@ -91,7 +91,7 @@
 			return '0'B;
 		}
 	}
-	setverdict(fail, "Unsupported template");
+	setverdict(fail, "Unsupported template", inp);
 	self.stop;
 }