Forward mouse wheel changes to the parent view so the scroll view can react to them.

git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@31573 a95241bf-73f2-0310-859d-f6bbb57e9c96

src/apps/debugger/gui/team_window/SourceView.cpp

@@ -958,6 +958,10 @@ SourceView::TextView::MessageReceived(BMessage* message)
 			_CopySelectionToClipboard();
 			break;
 
+		case B_MOUSE_WHEEL_CHANGED:
+			fSourceView->MessageReceived(message);
+			break;
+
 		default:
 			SourceView::BaseView::MessageReceived(message);
 			break;