Avoid the ptr.reset(new XXX()) anti-pattern

core/fpdfdoc/cpdf_variabletext.cpp

Index: core/fpdfdoc/cpdf_variabletext.cpp
diff --git a/core/fpdfdoc/cpdf_variabletext.cpp b/core/fpdfdoc/cpdf_variabletext.cpp
index 5cc7e9bf11205947004e4cb568937614c7926380..1313516f22a3f6ba53a32942d5bda300a5123ac5 100644
--- a/core/fpdfdoc/cpdf_variabletext.cpp
+++ b/core/fpdfdoc/cpdf_variabletext.cpp
@@ -15,6 +15,7 @@
 #include "core/fpdfdoc/cpvt_wordinfo.h"
 #include "core/fpdfdoc/csection.h"
 #include "core/fpdfdoc/ipvt_fontmap.h"
+#include "third_party/base/ptr_util.h"
 
 namespace {
 
@@ -1096,7 +1097,7 @@ bool CPDF_VariableText::IsLatinWord(uint16_t word) {
 
 CPDF_VariableText::Iterator* CPDF_VariableText::GetIterator() {
   if (!m_pVTIterator)
-    m_pVTIterator.reset(new CPDF_VariableText::Iterator(this));
+    m_pVTIterator = pdfium::MakeUnique<CPDF_VariableText::Iterator>(this);
   return m_pVTIterator.get();
 }