Minor fix to Window.Java. Incorrect shell was being called in if statement. Corrected to 'loopShell' which is the parameter created for this function.

Author: grissinibread

bundles/org.eclipse.jface/src/org/eclipse/jface/window/Window.java

@@ -812,7 +812,7 @@ private void runEventLoop(Shell loopShell) {
 
 		//Use the display provided by the shell if possible
 		Display display;
-		if (shell == null) {
+		if (loopShell == null) {
 			display = Display.getCurrent();
 		} else {
 			display = loopShell.getDisplay();