Rename gophercloud.CommonResult references.
diff --git a/openstack/common/extensions/results.go b/openstack/common/extensions/results.go
index 4827072..123c33f 100755
--- a/openstack/common/extensions/results.go
+++ b/openstack/common/extensions/results.go
@@ -9,7 +9,7 @@
 // GetResult temporarily stores the result of a Get call.
 // Use its Extract() method to interpret it as an Extension.
 type GetResult struct {
-	gophercloud.CommonResult
+	gophercloud.Result
 }
 
 // Extract interprets a GetResult as an Extension.