install_update_dovecot-2.4.sh: fix errors Correct errors relating to database access.

install_update_dovecot-2.4.sh

@@ -6695,13 +6695,10 @@ EOF
 passdb_default_password_scheme = ${default_pass_scheme}
 sql_driver = mysql
 
-mysql localhost {
-
-   parameters {
-      user=${dbuser}
-      password=${dbpassword}
-      dbname=${dbname}
-   }
+mysql /run/mysqld/mysqld.sock {
+   user = ${dbuser}
+   password = ${dbpassword}
+   dbname = ${dbname}
 }
 EOF
       if [ "$?" = 0 ]; then
@@ -9211,7 +9208,7 @@ userdb sql {
 EOF
       if grep -qE "^\s*userdb sql\s+{" "${_conf_file}"; then
 
-         replace_code_block "userdb" "${NEW_BLOCK}" "${_conf_file}" || _failed=true
+         replace_code_block "userdb sql" "${NEW_BLOCK}" "${_conf_file}" || _failed=true
 
       else
          cat <<EOF >> "${_conf_file}" || _failed=true