ssl/test/runner: Change ecdsa.PublicKey initialization

Change-Id: I4dea223825da4e4ab0bc789e738f470f5fe5d659
Reviewed-on: https://boringssl-review.googlesource.com/20044
Commit-Queue: Martin Kreichgauer <martinkr@google.com>
Commit-Queue: David Benjamin <davidben@google.com>
Reviewed-by: David Benjamin <davidben@google.com>
CQ-Verified: CQ bot account: commit-bot@chromium.org <commit-bot@chromium.org>

ssl/test/runner/handshake_server.go

diff --git a/ssl/test/runner/handshake_server.go b/ssl/test/runner/handshake_server.go
index 5dee5fb..4a056b9 100644
--- a/ssl/test/runner/handshake_server.go
+++ b/ssl/test/runner/handshake_server.go
@@ -1935,7 +1935,7 @@
 	if !elliptic.P256().IsOnCurve(x, y) {
 		return nil, errors.New("tls: invalid channel ID public key")
 	}
-	channelID := &ecdsa.PublicKey{elliptic.P256(), x, y}
+	channelID := &ecdsa.PublicKey{Curve: elliptic.P256(), X: x, Y: y}
 	if !ecdsa.Verify(channelID, channelIDHash, r, s) {
 		return nil, errors.New("tls: invalid channel ID signature")
 	}