auto heal(3)

Signed-off-by: mujunxiang <1948535941@qq.com>

ecstore/src/endpoints.rs

@@ -117,7 +117,7 @@ impl Endpoints {
     // GetString - returns endpoint string of i-th endpoint (0-based),
     // and empty string for invalid indexes.
     pub fn get_string(&self, i: usize) -> String {
-        if i < 0 || i >= self.0.len() {
+        if i >= self.0.len() {
             return "".to_string();
         }