Add PERLIO_INIT to PERL_SYS_INIT.

I infer that this was accidentally omitted from change 29060

p4raw-id: //depot/perl@29074

1 files changed, 1 insertions, 1 deletions

diff --git a/perl.h b/perl.h
index d047030a9c..b23439f681 100644
--- a/perl.h
+++ b/perl.h
@@ -3865,7 +3865,7 @@ typedef Sighandler_t Sigsave_t;
 
 #ifdef USE_PERLIO
 EXTERN_C void PerlIO_teardown(pTHX);
-# ifdef USE_THREADS
+# ifdef USE_ITHREADS
 #  define PERLIO_INIT MUTEX_INIT(&PL_perlio_mutex)
 #  define PERLIO_TERM 				\
 	STMT_START {				\