amigaos4: needs inplace edit backup file

Use __amigaos4__ define instead of AMIGAOS.

diff --git a/doio.c b/doio.c
index d8ea076..f41a559 100644 (file)
--- a/doio.c
+++ b/doio.c
@@ -943,7 +943,7 @@ Perl_nextargv(pTHX_ GV *gv, bool nomagicopen)
 #endif
                }
                else {
-#if !defined(DOSISH) && !defined(AMIGAOS)
+#if !defined(DOSISH) && !defined(__amigaos4__)
 #  ifndef VMS  /* Don't delete; use automatic file versioning */
                    if (UNLINK(PL_oldname) < 0) {
                        Perl_ck_warner_d(aTHX_ packWARN(WARN_INPLACE),