Improve hint table validation checks.

core/fpdfapi/fpdf_parser/cpdf_number.cpp

Index: core/fpdfapi/fpdf_parser/cpdf_number.cpp
diff --git a/core/fpdfapi/fpdf_parser/cpdf_number.cpp b/core/fpdfapi/fpdf_parser/cpdf_number.cpp
index a6bace57c94f06d3fbd75fd6e8d0c3fb390efb56..5012e308ce5deb70b53e79aa9e21e6bad297b3c6 100644
--- a/core/fpdfapi/fpdf_parser/cpdf_number.cpp
+++ b/core/fpdfapi/fpdf_parser/cpdf_number.cpp
@@ -6,15 +6,14 @@
 
 #include "core/fpdfapi/fpdf_parser/include/cpdf_number.h"
 
-CPDF_Number::CPDF_Number() : m_bInteger(TRUE), m_Integer(0) {}
+CPDF_Number::CPDF_Number() : m_bInteger(true), m_Integer(0) {}
 
-CPDF_Number::CPDF_Number(int value) : m_bInteger(TRUE), m_Integer(value) {}
+CPDF_Number::CPDF_Number(int value) : m_bInteger(true), m_Integer(value) {}
 
-CPDF_Number::CPDF_Number(FX_FLOAT value) : m_bInteger(FALSE), m_Float(value) {}
+CPDF_Number::CPDF_Number(FX_FLOAT value) : m_bInteger(false), m_Float(value) {}
 
-CPDF_Number::CPDF_Number(const CFX_ByteStringC& str) {
-  FX_atonum(str, m_bInteger, &m_Integer);
-}
+CPDF_Number::CPDF_Number(const CFX_ByteStringC& str)
+    : m_bInteger(FX_atonum(str, &m_Integer)) {}
 
 CPDF_Number::~CPDF_Number() {}
 
@@ -47,7 +46,7 @@ const CPDF_Number* CPDF_Number::AsNumber() const {
 }
 
 void CPDF_Number::SetString(const CFX_ByteString& str) {
-  FX_atonum(str.AsStringC(), m_bInteger, &m_Integer);
+  m_bInteger = FX_atonum(str.AsStringC(), &m_Integer);
 }
 
 CFX_ByteString CPDF_Number::GetString() const {