Correcting a mistake in InLeapYear() function.

js/tests/ecma/shell.js

@@ -345,7 +345,7 @@ function InLeapYear( t ) {
 	if ( DaysInYear(YearFromTime(t)) ==	366	) {
 		return 1;
 	} else {
-		return "ERROR:	DayFromYear("+y+") case	not	covered";
+		return "ERROR:  InLeapYear("+ t + ") case not covered";
 	}
 }
 function YearFromTime( t ) {