Missing null pointer check in ads_loader.go

[lizhencheng]

What happened:
Missing null pointer check in ads_loader.go
e.g.:

kmesh/pkg/controller/envoy/ads_loader.go

Lines 121 to 141 in c1c1cbf

 func newApiSocketAddress(address *config_core_v3.Address) *core_v2.SocketAddress { 
 	var addr *config_core_v3.SocketAddress 
  
 	switch address.GetAddress().(type) { 
 	case *config_core_v3.Address_SocketAddress: 
 		addr = address.GetSocketAddress() 
 	default: 
 		return nil 
 	} 
  
 	if addr == nil || !nets.GetConfig().IsEnabledProtocol(addr.GetProtocol().String()) { 
 		return nil 
 	} 
  
 	return &core_v2.SocketAddress{ 
 		// Protocol: core_v2.SocketAddress_Protocol(addr.GetProtocol()), 
 		Port: nets.ConvertPortToBigEndian(addr.GetPortValue()), 
 		Ipv4: nets.ConvertIpToUint32(addr.GetAddress()), 
 	} 
 } 
  

What you expected to happen:
add nil pointer check in ads_loader.go

Environment:

• Kmesh version:0.2.0
• Others: