hg: jdk-updates/jdk13u: 8185898: setRequestProperty(key, null) results in HTTP header without colon in request

[rob.mckenna at oracle.com]

Changeset: c436c14819d7
Author:    michaelm
Date:      2019-08-12 11:24 +0100
URL:       https://hg.openjdk.java.net/jdk-updates/jdk13u/rev/c436c14819d7

8185898: setRequestProperty(key, null) results in HTTP header without colon in request
Reviewed-by: chegar, dfuchs

! src/java.base/share/classes/sun/net/www/MessageHeader.java
+ test/jdk/sun/net/www/B8185898.java