Don’t treat setpgrp($nonzero) as setpgrp(1)

This was broken inadvertently by 92f2ac5f (5.15.3).

I really have no idea how to test this.  I only confirmed the bug and
its fix via a temporary warn statement in pp_setpgrp (obviously not
included in this commit).

1 files changed, 1 insertions, 1 deletions

diff --git a/pp_sys.c b/pp_sys.c
index 16c2d60ba0..e37cfa8838 100644
--- a/pp_sys.c
+++ b/pp_sys.c
@@ -4449,7 +4449,7 @@ PP(pp_setpgrp)
     Pid_t pgrp;
     Pid_t pid;
     pgrp = MAXARG == 2 && (TOPs||POPs) ? POPi : 0;
-    if (MAXARG > 0) pid = TOPs && TOPi;
+    if (MAXARG > 0) pid = TOPs ? TOPi : 0;
     else {
 	pid = 0;
 	XPUSHi(-1);