Add OpModuleProcessed to debug opcode (#4694)

diff --git a/source/opcode.cpp b/source/opcode.cpp
index 88085df..c9c425d 100644
--- a/source/opcode.cpp
+++ b/source/opcode.cpp
@@ -1,4 +1,4 @@
-// Copyright (c) 2015-2020 The Khronos Group Inc.
+// Copyright (c) 2015-2022 The Khronos Group Inc.
 // Modifications Copyright (C) 2020 Advanced Micro Devices, Inc. All rights
 // reserved.
 //
@@ -631,6 +631,7 @@
     case SpvOpString:
     case SpvOpLine:
     case SpvOpNoLine:
+    case SpvOpModuleProcessed:
       return true;
     default:
       return false;