addr can not be nil after initial check

Signed-off-by: Jiri Podivin <[email protected]>

Author: jpodivin

apis/network/v1beta1/netconfig_webhook.go

@@ -406,20 +406,20 @@ func valiateAddress(
 
 	// Validate IP Family for IPv4
 	if k8snet.IsIPv4CIDR(ipPrefix) {
-		if addr != nil && !k8snet.IsIPv4(addr) {
+		if !k8snet.IsIPv4(addr) {
 			allErrs = append(allErrs, field.Invalid(path, addrStr, errMixedAddressFamily))
 		}
 	}
 
 	// Validate IP Family for IPv6
 	if k8snet.IsIPv6CIDR(ipPrefix) {
-		if addr != nil && !k8snet.IsIPv6(addr) {
+		if !k8snet.IsIPv6(addr) {
 			allErrs = append(allErrs, field.Invalid(path, addrStr, errMixedAddressFamily))
 		}
 	}
 
 	// Validate addr in cidr
-	if addr != nil && !ipPrefix.Contains(addr) {
+	if !ipPrefix.Contains(addr) {
 		allErrs = append(allErrs, field.Invalid(path, addrStr, fmt.Sprintf(errNotInCidr, ipPrefix.String())))
 	}