print default module temporary directory path in summary
only if the module is enabled
diff --git a/auto/summary b/auto/summary
index 62de870..b1b1de8 100644
--- a/auto/summary
+++ b/auto/summary
@@ -97,8 +97,17 @@
 cat << END
   nginx http access log file: "$NGX_HTTP_LOG_PATH"
   nginx http client request body temporary files: "$NGX_HTTP_CLIENT_TEMP_PATH"
-  nginx http proxy temporary files: "$NGX_HTTP_PROXY_TEMP_PATH"
-  nginx http fastcgi temporary files: "$NGX_HTTP_FASTCGI_TEMP_PATH"
-  nginx http uwsgi temporary files: "$NGX_HTTP_UWSGI_TEMP_PATH"
-
 END
+
+if [ $HTTP_PROXY = YES ]; then
+    echo "  nginx http proxy temporary files: \"$NGX_HTTP_PROXY_TEMP_PATH\""
+fi
+
+if [ $HTTP_FASTCGI = YES ]; then
+    echo "  nginx http fastcgi temporary files: \"$NGX_HTTP_FASTCGI_TEMP_PATH\""
+fi
+
+if [ $HTTP_UWSGI = YES ]; then
+    echo "  nginx http uwsgi temporary files: \"$NGX_HTTP_UWSGI_TEMP_PATH\""
+fi
+