debug_counter.c: include ruby/config.h before stdio.h

to define _LARGE_FILES

debug_counter.c

@@ -9,9 +9,9 @@
 **********************************************************************/
 
 #include "debug_counter.h"
+#include "internal.h"
 #include <stdio.h>
 #include <locale.h>
-#include "internal.h"
 
 #if USE_DEBUG_COUNTER
 static const char *const debug_counter_names[] = {