Initialize CPDF_TextState members in the header.

Change-Id: I94b9d36e348ef30c66872963b9af8035eaae046f
Reviewed-on: https://pdfium-review.googlesource.com/c/pdfium/+/67630
Reviewed-by: Tom Sepez <tsepez@chromium.org>
Commit-Queue: Lei Zhang <thestig@chromium.org>

core/fpdfapi/page/cpdf_textstate.cpp

diff --git a/core/fpdfapi/page/cpdf_textstate.cpp b/core/fpdfapi/page/cpdf_textstate.cpp
index b8019d5..d8ede16 100644
--- a/core/fpdfapi/page/cpdf_textstate.cpp
+++ b/core/fpdfapi/page/cpdf_textstate.cpp
@@ -78,18 +78,7 @@
   return m_Ref.GetPrivateCopy()->m_CTM;
 }
 
-CPDF_TextState::TextData::TextData()
-    : m_pFont(nullptr),
-      m_pDocument(nullptr),
-      m_FontSize(1.0f),
-      m_CharSpace(0),
-      m_WordSpace(0),
-      m_TextMode(TextRenderingMode::MODE_FILL) {
-  m_Matrix[0] = m_Matrix[3] = 1.0f;
-  m_Matrix[1] = m_Matrix[2] = 0;
-  m_CTM[0] = m_CTM[3] = 1.0f;
-  m_CTM[1] = m_CTM[2] = 0;
-}
+CPDF_TextState::TextData::TextData() = default;
 
 CPDF_TextState::TextData::TextData(const TextData& that)
     : m_pFont(that.m_pFont),

core/fpdfapi/page/cpdf_textstate.h

diff --git a/core/fpdfapi/page/cpdf_textstate.h b/core/fpdfapi/page/cpdf_textstate.h
index 5cc0c1d..4ce70c3 100644
--- a/core/fpdfapi/page/cpdf_textstate.h
+++ b/core/fpdfapi/page/cpdf_textstate.h
@@ -72,12 +72,12 @@
 
     RetainPtr<CPDF_Font> m_pFont;
     UnownedPtr<CPDF_Document> m_pDocument;
-    float m_FontSize;
-    float m_CharSpace;
-    float m_WordSpace;
-    TextRenderingMode m_TextMode;
-    float m_Matrix[4];
-    float m_CTM[4];
+    float m_FontSize = 1.0f;
+    float m_CharSpace = 0.0f;
+    float m_WordSpace = 0.0f;
+    TextRenderingMode m_TextMode = TextRenderingMode::MODE_FILL;
+    float m_Matrix[4] = {1.0f, 0.0f, 0.0f, 1.0f};
+    float m_CTM[4] = {1.0f, 0.0f, 0.0f, 1.0f};
 
    private:
     TextData();