RFR: JDK-8276809: java/awt/font/JNICheck/FreeTypeScalerJNICheck.java shows JNI warning on Windows

[Matthias Baesken]

The new test java/awt/font/JNICheck/FreeTypeScalerJNICheck.java introduced with https://bugs.openjdk.java.net/browse/JDK-8269223 adds -Xcheck:jni to an awt related test, and shows on Windows server 2019 the following JNI warning , so the test  JNICheck/FreeTypeScalerJNICheck.java fails on this Windows version.

:stdErr:
Thu Oct 28 01:27:10 CEST 2021
stdout: [WARNING in native method: JNI call made without checking exceptions when required to from CallStaticVoidMethodV
               at sun.awt.Win32GraphicsEnvironment.initDisplay(java.desktop at 18.0.0.1-internal/Native Method)
               at sun.awt.Win32GraphicsEnvironment.initDisplayWrapper(java.desktop at 18.0.0.1-internal/Win32GraphicsEnvironment.java:95)
               at sun.awt.Win32GraphicsEnvironment.<clinit>(java.desktop at 18.0.0.1-internal/Win32GraphicsEnvironment.java:63)
               at sun.awt.PlatformGraphicsInfo.createGE(java.desktop at 18.0.0.1-internal/PlatformGraphicsInfo.java:34)
               at java.awt.GraphicsEnvironment$LocalGE.createGE(java.desktop at 18.0.0.1-internal/GraphicsEnvironment.java:93)
               at java.awt.GraphicsEnvironment$LocalGE.<clinit>(java.desktop at 18.0.0.1-internal/GraphicsEnvironment.java:84)
               at java.awt.GraphicsEnvironment.getLocalGraphicsEnvironment(java.desktop at 18.0.0.1-internal/GraphicsEnvironment.java:106)
               at FreeTypeScalerJNICheck.runTest(FreeTypeScalerJNICheck.java:53)
               at FreeTypeScalerJNICheck.main(FreeTypeScalerJNICheck.java:44)

We can get rid of the warning by adjusting a JNU_CallStaticMethodByName call in awt_Win32GraphicsEnv.cpp .

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Commit messages:
 - JDK-8276809

Changes: https://git.openjdk.java.net/jdk/pull/6306/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=6306&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8276809
  Stats: 3 lines in 1 file changed: 1 ins; 0 del; 2 mod
  Patch: https://git.openjdk.java.net/jdk/pull/6306.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/6306/head:pull/6306

PR: https://git.openjdk.java.net/jdk/pull/6306