cri/config: fix range iterator issue in ValidatePluginConfig

Go uses the same address variable while iterating in a range,
so use a copy when using its address.

Signed-off-by: Gaurav Singh <gaurav1086@gmail.com>

pkg/cri/config/config.go

@@ -352,6 +352,7 @@ func ValidatePluginConfig(ctx context.Context, c *PluginConfig) error {
 			c.Registry.Configs = make(map[string]RegistryConfig)
 		}
 		for endpoint, auth := range c.Registry.Auths {
+			auth := auth
 			config := c.Registry.Configs[endpoint]
 			config.Auth = &auth
 			c.Registry.Configs[endpoint] = config