Fixed SD2-404: C#: ExpressionFinder bug with CastExpressions

git-svn-id: svn://svn.sharpdevelop.net/sharpdevelop/trunk@394 1ccf3a8d-04fe-1044-b7c0-cef0b8235c61

src/AddIns/BackendBindings/CSharpBinding/Project/Src/Parser/ExpressionFinder.cs

@@ -662,6 +662,10 @@ namespace CSharpBinding.Parser
 								case "using":
 									curTokenType = Using;
 									break;
+								case "return":
+								case "throw":
+									// treat as error / end of expression
+									break;
 								default:
 									curTokenType = Ident;
 									lastIdentifier = ident;