Extra return in check_issued.

(Imported from upstream's b8d687bb561384bb3d52027cbf637fa4852c4225)

Change-Id: I5155b8fa165fbb83a0ba6790571fec28e22cd45c

crypto/x509/x509_vfy.c

diff --git a/crypto/x509/x509_vfy.c b/crypto/x509/x509_vfy.c
index 18bb772..8094c78 100644
--- a/crypto/x509/x509_vfy.c
+++ b/crypto/x509/x509_vfy.c
@@ -484,7 +484,6 @@
 	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 */