避免内存泄漏

lb_demo1/naming/resolver.go

@@ -106,7 +106,9 @@ func remove(s []resolver.Address, addr string) ([]resolver.Address, bool) {
 	for i := range s {
 		if s[i].Addr == addr {
 			s[i] = s[len(s)-1]
-			return s[:len(s)-1], true
+			s[len(s)-1] = resolver.Address{}
+			s = s[:len(s)-1]
+			return s, true
 		}
 	}
 	return nil, false

lb_demo2/naming/resolver.go

@@ -140,8 +140,10 @@ func remove(s []resolver.Address, addr string, weight int) ([]resolver.Address,
 		if s[i].Addr == addr {
 			count += 1
 			s[i] = s[len(s)-count]
+			s[len(s)-count] = resolver.Address{}
 			if count == weight {
-				return s[:len(s)-count], true
+				s = s[:len(s)-count]
+				return s, true
 			}
 		}
 		i--

lb_demo3/naming/resolver.go

@@ -123,7 +123,9 @@ func remove(s []resolver.Address, addr string) ([]resolver.Address, bool) {
 	for i := range s {
 		if s[i].Addr == addr {
 			s[i] = s[len(s)-1]
-			return s[:len(s)-1], true
+			s[len(s)-1] = resolver.Address{}
+			s = s[:len(s)-1]
+			return s, true
 		}
 	}
 	return nil, false