toke: fix type of olen variable

The olen variable is declared as unsigned int in toke/stream.c, but
simply as int in the extern definition in emit.c. This may cause
undefined behaviour, so fix that.

Signed-off-by: Aurelien Jarno <[email protected]>

Author: aurel32

toke/emit.c

@@ -133,7 +133,7 @@ static bool fcode_written = FALSE;
  **************************************************************************** */
 
 extern u8 *ostart;
-extern int olen;
+extern unsigned int olen;
 extern void increase_output_buffer( void);