CComponentsWindow: adapt header and footer corners for parent window

Corners of header and footer were not adapted to parent form.
It's unsightly, if these elements are not using the same corner types
like the parent window.

src/gui/components/cc_frm_window.cpp

@@ -137,6 +137,7 @@ void CComponentsWindow::initHeader()
 		ccw_head->setCaption(ccw_caption, ccw_align_mode);
 // 		ccw_head->initCCItems();
 		ccw_head->setDefaultButtons(ccw_buttons);
+		ccw_head->setCorner(corner_rad, CORNER_TOP);
 	}
 }
 
@@ -176,6 +177,7 @@ void CComponentsWindow::initFooter()
 		ccw_footer->setPos(0, CC_APPEND);
 		ccw_footer->setWidth(width-2*fr_thickness);
 		ccw_footer->setShadowOnOff(shadow);
+		ccw_footer->setCorner(corner_rad, CORNER_BOTTOM);
 	}
 }