fix: update to spec recommendation (alcMakeContextCurrent before destroy)

src/java/org/lwjgl/openal/test/PlayTest.java

@@ -147,6 +147,7 @@ public class PlayTest extends BasicTest {
         
         //no errorchecking from now on, since our context is gone.
         //shutdown
+        alc.makeContextCurrent(null);
         alc.destroyContext(context);
         alc.closeDevice(device);
     }