fixed problem with parsing optional string arguments

apps/openmw/mwdialogue/dialoguemanager.cpp

@@ -650,7 +650,7 @@ namespace MWDialogue
                 locals = mEnvironment.mScriptManager->getLocals (actorScript);
             }
 
-            Compiler::ScriptParser parser(mErrorHandler,mCompilerContext, locals);
+            Compiler::ScriptParser parser(mErrorHandler,mCompilerContext, locals, false);
 
             scanner.scan (parser);
             if(mErrorHandler.isGood())

components/compiler/scriptparser.cpp

@@ -77,4 +77,3 @@ namespace Compiler
         mOutput.clear();
     }
 }
-

components/compiler/stringparser.cpp

@@ -39,6 +39,11 @@ namespace Compiler
             mState = CommaState;
             return true;
         }
+        else if (code==Scanner::S_newline && mState==StartState)
+        {
+            scanner.putbackSpecial (code, loc);
+            return false;
+        }
 
         return Parser::parseSpecial (code, loc, scanner);
     }