fixed a few x syncronization issues

main.cpp

@@ -205,11 +205,13 @@ int main( int argc, char** argv ) {
     }
     xengine->releaseCursor();
     xengine->releaseKeyboard();
+    // Try to process any last-second requests.
+    xengine->tick();
     // Clean up global classes.
     delete xengine;
     delete options;
     // Wait to make sure X11 cleans up our window before we end.
-    usleep( 10000 );
+    usleep( 100000 );
     // If we canceled the selection, return error.
     if ( state == -1 ) {
         return 1;

x.cpp

@@ -225,6 +225,9 @@ slop::Rectangle::~Rectangle() {
         return;
     }
     //XFreeColors( xengine->m_display, xengine->m_colormap, m_color.pixel, 1,
+    // Attempt to move window offscreen before trying to remove it.
+    XResizeWindow( xengine->m_display, m_window, 1, 1 );
+    XMoveWindow( xengine->m_display, m_window, 0, 0 );
     XUnmapWindow( xengine->m_display, m_window );
     XDestroyWindow( xengine->m_display, m_window );
 }