add error check driver install and remove suprefluous

lib/util-desktop.sh

@@ -30,7 +30,6 @@ setup_graphics_card() {
         elif [[ $(cat /tmp/.driver) == "video-nouveau" ]]; then
             sed -i 's/MODULES=""/MODULES="nouveau"/' ${MOUNTPOINT}/etc/mkinitcpio.conf
         fi
-        check_for_error "$FUNCNAME $(cat /tmp/.driver)" "$?"
     else
         DIALOG " $_ErrTitle " --msgbox "\n\n$_WarnInstGr\n" 0 0
         check_for_error "No video-driver selected."

lib/util-menu.sh

@@ -212,8 +212,10 @@ install_drivers_menu() {
 
         case $(cat ${ANSWER}) in
             "1") arch_chroot "mhwd -a pci free 0300"
+                check_for_error "$_InstFree" $?
                 ;;
             "2") arch_chroot "mhwd -a pci nonfree 0300"
+                check_for_error "$_InstProp" $?
                 ;;
             "3") setup_graphics_card
                 ;;