download_and_compile.sh: other fix for the dpkg-query invocation

Thanks to wkitty42 for pointing it out!

download_and_compile.sh

@@ -312,7 +312,7 @@ if [[ "$DOWNLOAD_PACKAGES" = "y" ]] && [[ "$APT_GET_UPDATE" = "y" ]]; then
 fi
 
 # Ensure 'dctrl-tools' is installed
-if [[ "$(dpkg-query --showformat='${db:Status-Status}\n' --show dctrl-tools \
+if [[ "$(dpkg-query --showformat='${Status}\n' --show dctrl-tools \
                     2>/dev/null | awk '{print $3}')" != "installed" ]]; then
   if [[ "$DOWNLOAD_PACKAGES" = "y" ]]; then
     _aptInstall dctrl-tools