Bug 484682 - keep "force resize" on Wayland

Until we have a better solution, limit the new behavior to X11 only, as
we have reports that on Wayland some wizards seem to be affected.

Change-Id: I732926e411ee754974ecedd4c5e8d4e9e07a5240
Signed-off-by: Andrey Loskutov <loskutov@gmx.de>
diff --git a/bundles/org.eclipse.swt/Eclipse SWT/gtk/org/eclipse/swt/widgets/Scrollable.java b/bundles/org.eclipse.swt/Eclipse SWT/gtk/org/eclipse/swt/widgets/Scrollable.java
index ff43177..2375f6f 100644
--- a/bundles/org.eclipse.swt/Eclipse SWT/gtk/org/eclipse/swt/widgets/Scrollable.java
+++ b/bundles/org.eclipse.swt/Eclipse SWT/gtk/org/eclipse/swt/widgets/Scrollable.java
@@ -41,7 +41,7 @@
 	ScrollBar horizontalBar, verticalBar;
 
 	/** See bug 484682 */
-	static final boolean RESIZE_ON_GETCLIENTAREA = Boolean.getBoolean("org.eclipse.swt.resizeOnGetClientArea");
+	static final boolean RESIZE_ON_GETCLIENTAREA = !OS.isX11() || Boolean.getBoolean("org.eclipse.swt.resizeOnGetClientArea");
 
 /**
  * Prevents uninitialized instances from being created outside the package.