Get rid of NULLs in xfa/

xfa/fxfa/parser/xfa_script_signaturepseudomodel.cpp

Index: xfa/fxfa/parser/xfa_script_signaturepseudomodel.cpp
diff --git a/xfa/fxfa/parser/xfa_script_signaturepseudomodel.cpp b/xfa/fxfa/parser/xfa_script_signaturepseudomodel.cpp
index 6273dc0b458846580dc2a17700d5e8bcd57bafa4..20eff0b956c0426a9cb1fa3f2ccc2158b45ca78e 100644
--- a/xfa/fxfa/parser/xfa_script_signaturepseudomodel.cpp
+++ b/xfa/fxfa/parser/xfa_script_signaturepseudomodel.cpp
@@ -36,7 +36,7 @@ void CScript_SignaturePseudoModel::Script_SignaturePseudoModel_Verify(
     return;
   }
   CXFA_FFDoc* hDoc = pNotify->GetHDOC();
-  CXFA_Node* pNode = NULL;
+  CXFA_Node* pNode = nullptr;
   if (iLength >= 1) {
     pNode = static_cast<CXFA_Node*>(pArguments->GetObject(0));
   }
@@ -58,7 +58,7 @@ void CScript_SignaturePseudoModel::Script_SignaturePseudoModel_Sign(
     return;
   }
   CXFA_FFDoc* hDoc = pNotify->GetHDOC();
-  CXFA_NodeList* pNodeList = NULL;
+  CXFA_NodeList* pNodeList = nullptr;
   CFX_WideString wsExpression;
   CFX_WideString wsXMLIdent;
   if (iLength >= 1) {
@@ -109,7 +109,7 @@ void CScript_SignaturePseudoModel::Script_SignaturePseudoModel_Clear(
     return;
   }
   CXFA_FFDoc* hDoc = pNotify->GetHDOC();
-  CXFA_Node* pNode = NULL;
+  CXFA_Node* pNode = nullptr;
   FX_BOOL bClear = TRUE;
   if (iLength >= 1) {
     pNode = static_cast<CXFA_Node*>(pArguments->GetObject(0));