providers/aws: Fix issue with VPC Classic Link and regions that don't…

… support it

builtin/providers/aws/resource_aws_vpc.go

@@ -179,18 +179,27 @@ func resourceAwsVpcRead(d *schema.ResourceData, meta interface{}) error {
 	DescribeClassiclinkOpts := &ec2.DescribeVpcClassicLinkInput{
 		VpcIds: []*string{&vpcid},
 	}
+
+	// Classic Link is only available in regions that support EC2 Classic
 	respClassiclink, err := conn.DescribeVpcClassicLink(DescribeClassiclinkOpts)
 	if err != nil {
-		return err
-	}
-	classiclink_enabled := false
-	for _, v := range respClassiclink.Vpcs {
-		if *v.VpcId == vpcid {
-			classiclink_enabled = *v.ClassicLinkEnabled
-			break
+		if awsErr, ok := err.(awserr.Error); ok && awsErr.Code() == "UnsupportedOperation" {
+			log.Printf("[WARN] VPC Classic Link is not supported in this region")
+		} else {
+			return err
+		}
+	} else {
+		classiclink_enabled := false
+		for _, v := range respClassiclink.Vpcs {
+			if *v.VpcId == vpcid {
+				if v.ClassicLinkEnabled != nil {
+					classiclink_enabled = *v.ClassicLinkEnabled
+				}
+				break
+			}
 		}
+		d.Set("enable_classiclink", classiclink_enabled)
 	}
-	d.Set("enable_classiclink", classiclink_enabled)
 
 	// Get the main routing table for this VPC
 	// Really Ugly need to make this better - rmenn