Fix duplicate ILFunction annotations.

ICSharpCode.Decompiler/CSharp/CSharpDecompiler.cs

@@ -1698,10 +1698,7 @@ namespace ICSharpCode.Decompiler.CSharp
 				var function = ilReader.ReadIL((MethodDefinitionHandle)method.MetadataToken, methodBody, cancellationToken: CancellationToken);
 				function.CheckInvariant(ILPhase.Normal);
 
-				if (entityDecl != null)
-				{
-					AddAnnotationsToDeclaration(method, entityDecl, function);
-				}
+				AddAnnotationsToDeclaration(method, entityDecl, function);
 
 				var localSettings = settings.Clone();
 				if (IsWindowsFormsInitializeComponentMethod(method))
@@ -1751,7 +1748,6 @@ namespace ICSharpCode.Decompiler.CSharp
 
 					entityDecl.AddChild(body, Roles.Body);
 				}
-				entityDecl.AddAnnotation(function);
 
 				CleanUpMethodDeclaration(entityDecl, body, function, localSettings.DecompileMemberBodies);
 			}