Use unique pointers in CXFA_FMParse

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 5146a5e1296b807e67fbb4af4a9e6c2ec3ed9d86..ac18c15e6d3b50f4b73f9298ea411e31fb2e9c8c 100644
--- a/xfa/fxfa/fm2js/xfa_program.cpp
+++ b/xfa/fxfa/fm2js/xfa_program.cpp
@@ -6,6 +6,11 @@
 
 #include "xfa/fxfa/fm2js/xfa_program.h"
 
+#include <utility>
+#include <vector>
+
+#include "third_party/base/ptr_util.h"
+
 CXFA_FMProgram::CXFA_FMProgram() {}
 
 CXFA_FMProgram::~CXFA_FMProgram() {}
@@ -15,21 +20,17 @@ int32_t CXFA_FMProgram::Init(const CFX_WideStringC& wsFormcalc) {
 }
 
 int32_t CXFA_FMProgram::ParseProgram() {
-  CFX_ArrayTemplate<CXFA_FMExpression*>* expressions = nullptr;
   m_parse.NextToken();
-  if (!m_pErrorInfo.message.IsEmpty()) {
+  if (!m_pErrorInfo.message.IsEmpty())
     return -1;
-  }
-  expressions = m_parse.ParseTopExpression();
-  if (!m_pErrorInfo.message.IsEmpty()) {
-    for (int32_t u = 0; u < expressions->GetSize(); ++u)
-      delete expressions->GetAt(u);
 
-    delete expressions;
+  std::vector<std::unique_ptr<CXFA_FMExpression>> expressions =
+      m_parse.ParseTopExpression();
+  if (!m_pErrorInfo.message.IsEmpty())
     return -1;
-  }
-  m_globalFunction.reset(
-      new CXFA_FMFunctionDefinition(1, 1, FX_WSTRC(L""), nullptr, expressions));
+
+  m_globalFunction = pdfium::MakeUnique<CXFA_FMFunctionDefinition>(
+      1, true, L"", nullptr, std::move(expressions));
   return 0;
 }