Don't try to export symbols that don't exist

Change #24148 added Perl_rvpv_dup() to the public API, but it is only
defined when USE_ITHREADS is defined.  Adjust makedef.pl accordingly
to keep Win32 happy.

p4raw-id: //depot/perl@24178

diff --git a/makedef.pl b/makedef.pl
index 256eddd..8b4dd41 100644 (file)
--- a/makedef.pl
+++ b/makedef.pl
@@ -693,6 +693,7 @@ unless ($define{'USE_ITHREADS'}) {
                    Perl_mg_dup
                    Perl_re_dup
                    Perl_sv_dup
+                   Perl_rvpv_dup
                    Perl_sys_intern_dup
                    Perl_ptr_table_clear
                    Perl_ptr_table_fetch