widl: Use ref_type to simplify some code.

tools/widl/parser.y

@@ -1235,10 +1235,7 @@ static unsigned char get_pointer_type( type_t *type )
   int t;
   if (is_attr( type->attrs, ATTR_STRING ))
   {
-    type_t *t = type;
-    while( t->type == 0 && t->ref )
-      t = t->ref;
-    switch( t->type )
+    switch( ref_type( type ) )
     {
     case RPC_FC_CHAR:
       return RPC_FC_C_CSTRING;

tools/widl/typegen.c

@@ -165,7 +165,7 @@ static inline int is_base_type(unsigned char type)
     }
 }
 
-static unsigned char ref_type(const type_t *type)
+unsigned char ref_type(const type_t *type)
 {
     while (type_has_ref(type))
         type = type->ref;

tools/widl/widltypes.h

@@ -297,4 +297,7 @@ struct _typelib_t {
     importlib_t *importlibs;
 };
 
+/* Get the actual type field for a type (chase down typedef references).  */
+unsigned char ref_type(const type_t *type);
+
 #endif