Extra return in check_issued.

(Imported from upstream's b8d687bb56)

Change-Id: I5155b8fa165fbb83a0ba6790571fec28e22cd45c

crypto/x509/x509_vfy.c

@@ -484,7 +484,6 @@ static int check_issued(X509_STORE_CTX *ctx, X509 *x, X509 *issuer)
 	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 */