Fix missing namespaces in the Disabled attribute that is conditionally compiled.

Author: bclothier

Rubberduck.Parsing/Common/DisabledAttribute.cs

@@ -1,12 +1,12 @@
 using System;
 
 namespace Rubberduck.Parsing.Common
-{ 
-// Conditional cannot be an expression, so we use combined #if and an
-// non-existent flag to ensure that the code is always checked at the
-// compile time but omitted in non-debug builds.
-#if !DEBUG 
-    [Conditional("I_WILL_NEVER_EXIST_CRY_MY_BELOVED_DUCK")]
+{
+    // Conditional cannot be an expression, so we use combined #if and an
+    // non-existent flag to ensure that the code is always checked at the
+    // compile time but omitted in non-debug builds.
+#if !DEBUG
+    [System.Diagnostics.Conditional("I_WILL_NEVER_EXIST_CRY_MY_BELOVED_DUCK")]
 #endif
     [AttributeUsage(AttributeTargets.Class)]
     public class DisabledAttribute : Attribute