RFR: 8264330: Scene MouseHandler is referencing removed nodes

[Kevin Rushforth]

On Wed, 31 Mar 2021 13:13:01 GMT, Kevin Rushforth <kcr at openjdk.org> wrote:

>> Small fix to clear a reference to a removed node left by Scene$MouseHandler.
>
> The fix looks good to me. I haven't run the test yet, but it seems OK except for the handling of GC to check for the leak (I left an inline comment).

Oh, I thought that `javafx.graphics` already referenced it. The following should be sufficient:

--- a/build.gradle
+++ b/build.gradle
@@ -2089,6 +2089,7 @@ project(":graphics") {
         stubCompile group: "junit", name: "junit", version: "4.8.2"

         antlr group: "org.antlr", name: "antlr4", version: "4.7.2", classifier: "complete"
+        testCompile project(":base").sourceSets.test.output
         compile project(':base')
     }

-------------

PR: https://git.openjdk.java.net/jfx/pull/448