v4 preprocessor/macro: minor fix

git-svn-id: https://www.dynare.org/svn/dynare/dynare_v4@1753 ac1d8469-bf42-47a9-8791-bf33cf982152

macro/MacroBison.yy

@@ -106,7 +106,7 @@ statement_list : statement EOL
                ;
 
 statement : expr
-            { *driver.out_stream << $1->toString(); }
+            { out << $1->toString(); }
           | DEFINE NAME EQUAL expr
             { driver.set_variable(*$2, $4); delete $2; }
           | FOR NAME IN expr

macro/MacroDriver.hh

@@ -170,9 +170,6 @@ public:
   //! Reference to the lexer
   class MacroFlex *lexer;
 
-  //! Copy of output stream
-  ostream *out_stream;
-
   //! Used to store the value of the last @if condition
   bool last_if;