[lldb-mi] Fix Windows build, missing assert.h include.

lldb/trunk/tools/lldb-mi/MICmnMIResultRecord.cpp

 //===-- Platform.cpp --------------------------------------------*- C++ -*-===//
 //
 //                     The LLVM Compiler Infrastructure
 //
 // This file is distributed under the University of Illinois Open Source
 // License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
 
+// Third Party Headers:
+#include <assert.h>
+
 // In-house headers:
 #include "MICmnMIResultRecord.h"
 #include "MICmnResources.h"
 
 //++ ------------------------------------------------------------------------------------
 // Details: Map a result class to the corresponding string.
 // Args:    veType      - (R) A MI result class enumeration.
 // Return:  const char* - The string corresponding to the result class.