RT2841: Extra return in check_issued

Reviewed-by: Dr. Stephen Henson <steve@openssl.org>
diff --git a/crypto/x509/x509_vfy.c b/crypto/x509/x509_vfy.c
index 85aa113..88bff63 100644
--- a/crypto/x509/x509_vfy.c
+++ b/crypto/x509/x509_vfy.c
@@ -520,7 +520,6 @@
 	ctx->current_cert = x;
 	ctx->current_issuer = issuer;
 	return ctx->verify_cb(0, ctx);
-	return 0;
 }
 
 /* Alternative lookup method: look from a STACK stored in other_ctx */