Keep parsing after invalid contstructor declaration

mcs/errors/cs1525-23.cs

+// CS1525: Unexpected symbol `public', expecting `:', `;', or `{'
+// Line: 5
+
+class TorrentEditor {
+	TorrentEditor ()
+
+	public TorrentEditor ()
+	{
+	}
+}

mcs/errors/cs1018.cs → mcs/errors/cs1525-24.cs

-// CS1018: Keyword `this' or `base' expected
+// CS1525: Unexpected symbol `{', expecting `base' or `this'
 // Line: 5
 
 class X {

mcs/errors/cs1018-2.cs → mcs/errors/cs1525-25.cs

-// CS1018: Keyword `this' or `base' expected
+// CS1525: Unexpected symbol `super', expecting `base' or `this'
 // Line: 7
 
 class Bar

mcs/mcs/cs-parser.jay

@@ -2245,8 +2245,9 @@ constructor_initializer
 		$$ = new ConstructorThisInitializer ((Arguments) $5, GetLocation ($2));
 		lbag.AddLocation ($$, GetLocation ($1), GetLocation ($3), GetLocation ($6));
 	  }
-	| COLON error {
-		Report.Error (1018, GetLocation ($1), "Keyword `this' or `base' expected");
+	| error
+	  {
+		Error_SyntaxError (yyToken);
 		$$ = null;
 	  }
 	;