Use grok_atou instead of atoi.

Remaining atoi() uses include at least:
ext/DynaLoader/dl_aix.xs, os2/os2.c, vms/vms.c

1 files changed, 1 insertions, 1 deletions

diff --git a/doio.c b/doio.c
index 46d07966a6..a631eeb038 100644
--- a/doio.c
+++ b/doio.c
@@ -391,7 +391,7 @@ Perl_do_open6(pTHX_ GV *gv, const char *oname, STRLEN len,
 			num_svs = 0;
 		    }
 		    else if (isDIGIT(*type)) {
-                        wanted_fd = atoi(type);
+                        wanted_fd = grok_atou(type, NULL);
 		    }
 		    else {
 			const IO* thatio;