ghash-s390x.pl: fix typo [that can induce SEGV in 31-bit build].
diff --git a/crypto/modes/asm/ghash-s390x.pl b/crypto/modes/asm/ghash-s390x.pl
index 48cb08d..6a40d5d 100644
--- a/crypto/modes/asm/ghash-s390x.pl
+++ b/crypto/modes/asm/ghash-s390x.pl
@@ -138,7 +138,7 @@
 .align	32
 .Lsoft_ghash:
 ___
-$cdoe.=<<___ if ($flavour =~ /3[12]/);
+$code.=<<___ if ($flavour =~ /3[12]/);
 	llgfr	$len,$len
 ___
 $code.=<<___;