Rename CXFA_TextTabstopsContext::m_bTabStops to m_bHasTabStops

Avoids conflict with m_Tabstops if Hungarian prefix is stripped.

-- Initialize in header while at it.

Change-Id: I67a49432a3594a943b1c6688f9a37e323ea35f2b
Reviewed-on: https://pdfium-review.googlesource.com/c/pdfium/+/69610
Reviewed-by: Lei Zhang <thestig@chromium.org>
Commit-Queue: Tom Sepez <tsepez@chromium.org>

xfa/fxfa/cxfa_textlayout.cpp

diff --git a/xfa/fxfa/cxfa_textlayout.cpp b/xfa/fxfa/cxfa_textlayout.cpp
index f95ebdc..f10d706 100644
--- a/xfa/fxfa/cxfa_textlayout.cpp
+++ b/xfa/fxfa/cxfa_textlayout.cpp
@@ -941,7 +941,7 @@
 
   if (iCount > 0) {
     iTabstopsIndex++;
-    m_pTabstopContext->m_bTabstops = true;
+    m_pTabstopContext->m_bHasTabstops = true;
     float fRight = 0;
     if (iPieces > 1) {
       CXFA_TextPiece* p = pPieceLine->m_textPieces[iPieces - 2].get();
@@ -951,7 +951,7 @@
         pPiece->rtPiece.width + pPiece->rtPiece.left - fRight;
   } else if (iTabstopsIndex > -1) {
     float fLeft = 0;
-    if (m_pTabstopContext->m_bTabstops) {
+    if (m_pTabstopContext->m_bHasTabstops) {
       uint32_t dwAlign = m_pTabstopContext->m_tabstops[iTabstopsIndex].dwAlign;
       if (dwAlign == FX_HashCode_GetW(L"center", false)) {
         fLeft = pPiece->rtPiece.width / 2.0f;
@@ -969,7 +969,7 @@
       }
       m_pTabstopContext->m_fLeft =
           std::min(fLeft, m_pTabstopContext->m_fTabWidth);
-      m_pTabstopContext->m_bTabstops = false;
+      m_pTabstopContext->m_bHasTabstops = false;
       m_pTabstopContext->m_fTabWidth = 0;
     }
     pPiece->rtPiece.left -= m_pTabstopContext->m_fLeft;

xfa/fxfa/cxfa_texttabstopscontext.cpp

diff --git a/xfa/fxfa/cxfa_texttabstopscontext.cpp b/xfa/fxfa/cxfa_texttabstopscontext.cpp
index b594f1c..0baf243 100644
--- a/xfa/fxfa/cxfa_texttabstopscontext.cpp
+++ b/xfa/fxfa/cxfa_texttabstopscontext.cpp
@@ -8,10 +8,9 @@
 
 #include <algorithm>
 
-CXFA_TextTabstopsContext::CXFA_TextTabstopsContext()
-    : m_iTabIndex(-1), m_bTabstops(false), m_fTabWidth(0), m_fLeft(0) {}
+CXFA_TextTabstopsContext::CXFA_TextTabstopsContext() = default;
 
-CXFA_TextTabstopsContext::~CXFA_TextTabstopsContext() {}
+CXFA_TextTabstopsContext::~CXFA_TextTabstopsContext() = default;
 
 void CXFA_TextTabstopsContext::Append(uint32_t dwAlign, float fTabstops) {
   XFA_TABSTOPS tabstop;
@@ -28,7 +27,7 @@
 
 void CXFA_TextTabstopsContext::Reset() {
   m_iTabIndex = -1;
-  m_bTabstops = false;
+  m_bHasTabstops = false;
   m_fTabWidth = 0;
   m_fLeft = 0;
 }

xfa/fxfa/cxfa_texttabstopscontext.h

diff --git a/xfa/fxfa/cxfa_texttabstopscontext.h b/xfa/fxfa/cxfa_texttabstopscontext.h
index 9837e35..956619f 100644
--- a/xfa/fxfa/cxfa_texttabstopscontext.h
+++ b/xfa/fxfa/cxfa_texttabstopscontext.h
@@ -29,10 +29,10 @@
   void RemoveAll();
   void Reset();
 
-  int32_t m_iTabIndex;
-  bool m_bTabstops;
-  float m_fTabWidth;
-  float m_fLeft;
+  int32_t m_iTabIndex = -1;
+  bool m_bHasTabstops = false;
+  float m_fTabWidth = 0.0f;
+  float m_fLeft = 0.0f;
   std::vector<XFA_TABSTOPS> m_tabstops;
 };