Delete empty error files at the end

CHANGELOG

@@ -13,6 +13,7 @@ The **patch** part changes is incremented if multiple releases happen the same m
 ### Added
 
 * Store iptables/nft stderr output in special files
+* … and delete the empty ones at the end
 
 ### Changed
 

dump-server-state.sh

@@ -762,6 +762,10 @@ task_systemctl() {
     fi
 }
 
+clean_empty_error_file() {
+    find "${dump_dir}" -type f -name "*.err" -size 0 -delete
+}
+
 main() {
     if [ -z "${dump_dir}" ]; then
         echo "ERROR: You must provide the --dump-dir argument" >&2
@@ -841,6 +845,7 @@ main() {
         task_systemctl
     fi
 
+    clean_empty_error_file
 
     debug "=> Your dump is available at ${dump_dir}"
     exit ${rc}