Sounds: Center initial window.

* Now uses BWindow::MoveOnScreen().

src/preferences/sounds/HApp.cpp

@@ -1,5 +1,5 @@
 /*
- * Copyright 2003-2010, Haiku. All rights reserved.
+ * Copyright 2003-2015, Haiku. All rights reserved.
  * Distributed under the terms of the MIT License.
  *
  * Authors:
@@ -25,10 +25,8 @@ HApp::HApp()
 	:
 	BApplication("application/x-vnd.Haiku-Sounds")
 {
-	BRect rect;
-	rect.Set(200, 150, 590, 570);
-
-	HWindow* window = new HWindow(rect, B_TRANSLATE_SYSTEM_NAME("Sounds"));
+	HWindow* window = new HWindow(BRect(-1, -1, 390, 420),
+		B_TRANSLATE_SYSTEM_NAME("Sounds"));
 	window->Show();
 }
 

src/preferences/sounds/HWindow.cpp

@@ -56,18 +56,19 @@ HWindow::HWindow(BRect rect, const char* name)
 	fFilePanel->SetTarget(this);
 
 	BPath path;
-	BMessage msg;
-
 	if (find_directory(B_USER_SETTINGS_DIRECTORY, &path) == B_OK) {
 		path.Append(kSettingsFile);
 		BFile file(path.Path(), B_READ_ONLY);
 
+		BMessage msg;
 		if (file.InitCheck() == B_OK && msg.Unflatten(&file) == B_OK
 			&& msg.FindRect("frame", &fFrame) == B_OK) {
 			MoveTo(fFrame.LeftTop());
 			ResizeTo(fFrame.Width(), fFrame.Height());
 		}
 	}
+
+	MoveOnScreen();
 }