feat: os_supported_lang function

quickget

@@ -3662,6 +3662,15 @@ fi
 
 LANGS=()
 
+os_supported_lang() {
+    echo -e "ERROR! ${LANG} is not a supported $(pretty_name "${OS}") language\n"
+    echo -n ' - Editions: '
+    for LANG in "${LANGS[@]}"; do
+        echo -n "${LANG} "
+    done
+    exit 1
+}
+
 handle_missing() {
     # Handle odd missing Fedora combinations
     if [[ $OS == fedora ]] ; then
@@ -3834,11 +3843,7 @@ if [ -n "${2}" ]; then
         if [ -n "${3}" ]; then
             LANG="${3}"
             if [[ ! ${LANGS[*]} =~ "${LANG}" ]]; then
-                echo -e "ERROR! ${LANG} is not a supported Windows ${RELEASE} language:\n"
-                for LANG in "${LANGS[@]}"; do
-                  echo -n "${LANG} "
-                done
-                exit 1
+                os_supported_lang
             fi
             VM_PATH="$(echo "${OS}-${RELEASE}-${LANG// /-}" | tr -d '()')"
         fi