Fix config rollback

Author: bjoernQ

esp-config/src/bin/esp-config/main.rs

@@ -46,6 +46,8 @@ fn main() -> Result<(), Box<dyn Error>> {
 
     let mut configs = parse_configs(&work_dir)?;
     let initial_configs = configs.clone();
+    let mut previous_config = initial_configs.clone();
+
     let mut errors_to_show = None;
 
     loop {
@@ -62,7 +64,8 @@ fn main() -> Result<(), Box<dyn Error>> {
         // done with the TUI
         if let Some(updated_cfg) = updated_cfg {
             configs = updated_cfg.clone();
-            apply_config(&work_dir, updated_cfg, initial_configs.clone())?;
+            apply_config(&work_dir, updated_cfg.clone(), previous_config.clone())?;
+            previous_config = updated_cfg;
         } else {
             println!("Reverted configuration...");
             apply_config(&work_dir, initial_configs, vec![])?;