Add end-of-early-data write

Signed-off-by: Xiaokang Qian <xiaokang.qian@arm.com>
diff --git a/tests/opt-testcases/tls13-misc.sh b/tests/opt-testcases/tls13-misc.sh
index 821a37b..b1f2147 100755
--- a/tests/opt-testcases/tls13-misc.sh
+++ b/tests/opt-testcases/tls13-misc.sh
@@ -281,6 +281,7 @@
             -c "ClientHello: early_data(42) extension exists." \
             -c "EncryptedExtensions: early_data(42) extension received." \
             -c "EncryptedExtensions: early_data(42) extension exists." \
+            -c "Client write EndOfEarlyData" \
             -s "Parsing extension 'Early Data/42' (0 bytes)" \
             -s "Sending extension Early Data/42 (0 bytes)" \
             -s "early data accepted"