Replace CFX_WideStringCArray with std::vector.

xfa/fxfa/fm2js/xfa_program.cpp

Index: xfa/fxfa/fm2js/xfa_program.cpp
diff --git a/xfa/fxfa/fm2js/xfa_program.cpp b/xfa/fxfa/fm2js/xfa_program.cpp
index 4d37f74767efca401cd29c95bc1c9c8aba895d52..514b7a6a23b70eda20e54becec5b19bcedaf99b5 100644
--- a/xfa/fxfa/fm2js/xfa_program.cpp
+++ b/xfa/fxfa/fm2js/xfa_program.cpp
@@ -26,8 +26,9 @@ int32_t CXFA_FMProgram::ParseProgram() {
   if (!m_pErrorInfo.message.IsEmpty())
     return -1;
 
+  std::vector<CFX_WideStringC> arguments;
   m_globalFunction = pdfium::MakeUnique<CXFA_FMFunctionDefinition>(
-      1, true, L"", nullptr, std::move(expressions));
+      1, true, L"", std::move(arguments), std::move(expressions));
   return 0;
 }