Fix indentation

ICSharpCode.Decompiler.Tests/TestCases/Correctness/NullPropagation.cs

@@ -2,8 +2,8 @@
 
 namespace ICSharpCode.Decompiler.Tests.TestCases.Correctness
 {
-    class NullPropagation
-    {
+	class NullPropagation
+	{
 		static void Main()
 		{
 			new NullPropagation().TestNotCoalescing();
@@ -25,5 +25,5 @@ namespace ICSharpCode.Decompiler.Tests.TestCases.Correctness
 		{
 			return c != null ? c.Text : "Hello";
 		}
-    }
+	}
 }

ICSharpCode.Decompiler/IL/Transforms/NullPropagationTransform.cs

@@ -28,8 +28,8 @@ namespace ICSharpCode.Decompiler.IL.Transforms
 	/// <summary>
 	/// Transform that converts code patterns like "v != null ? v.M() : null" to "v?.M()"
 	/// </summary>
-    struct NullPropagationTransform
-    {
+	struct NullPropagationTransform
+	{
 		internal static bool IsProtectedIfInst(IfInstruction ifInst)
 		{
 			// We exclude logic.and to avoid turning