defined() used against arrays is fatal since Perl 5.22

Index: lib/Psh.pm
--- lib/Psh.pm.orig
+++ lib/Psh.pm
@@ -367,7 +367,7 @@ sub find_array_name {
 
 sub defined_and_nonempty
 {
-	if (!defined(@_))    { return 0; }
+	if (!@_)    { return 0; }
 	if (scalar(@_) == 0) { return 0; }
 
 	if (scalar(@_) == 1) {