Get rid of most instance of 'foo == NULL'

core/src/fpdfapi/fpdf_render/fpdf_render_text.cpp

Index: core/src/fpdfapi/fpdf_render/fpdf_render_text.cpp
diff --git a/core/src/fpdfapi/fpdf_render/fpdf_render_text.cpp b/core/src/fpdfapi/fpdf_render/fpdf_render_text.cpp
index 88bd22823d0565fda88a211cbaf8044408740490..8427386e812c7469f5630d1b08650ca4c01a22cf 100644
--- a/core/src/fpdfapi/fpdf_render/fpdf_render_text.cpp
+++ b/core/src/fpdfapi/fpdf_render/fpdf_render_text.cpp
@@ -169,11 +169,11 @@ CFX_GlyphBitmap* CPDF_Type3Cache::RenderGlyph(CPDF_Type3Glyphs* pSize,
     } else {
     }
   }
-  if (pResBitmap == NULL) {
+  if (!pResBitmap) {
     image_matrix.Scale(retinaScaleX, retinaScaleY);
     pResBitmap = pBitmap->TransformTo(&image_matrix, left, top);
   }
-  if (pResBitmap == NULL) {
+  if (!pResBitmap) {
     return NULL;
   }
   CFX_GlyphBitmap* pGlyph = new CFX_GlyphBitmap;
@@ -218,7 +218,7 @@ FX_BOOL CPDF_RenderStatus::ProcessText(const CPDF_TextObject* textobj,
         break;
       case 1:
       case 5:
-        if (pFont->GetFace() == NULL &&
+        if (!pFont->GetFace() &&
             !(pFont->GetSubstFont()->m_SubstFlags & FXFONT_SUBST_GLYPHPATH)) {
           bFill = TRUE;
         } else {
@@ -227,7 +227,7 @@ FX_BOOL CPDF_RenderStatus::ProcessText(const CPDF_TextObject* textobj,
         break;
       case 2:
       case 6:
-        if (pFont->GetFace() == NULL &&
+        if (!pFont->GetFace() &&
             !(pFont->GetSubstFont()->m_SubstFlags & FXFONT_SUBST_GLYPHPATH)) {
           bFill = TRUE;
         } else {
@@ -305,21 +305,21 @@ FX_BOOL CPDF_RenderStatus::ProcessText(const CPDF_TextObject* textobj,
       pFont, font_size, &text_matrix, fill_argb, &m_Options);
 }
 CPDF_Type3Cache* CPDF_RenderStatus::GetCachedType3(CPDF_Type3Font* pFont) {
-  if (pFont->m_pDocument == NULL) {
+  if (!pFont->m_pDocument) {
     return NULL;
   }
   pFont->m_pDocument->GetPageData()->GetFont(pFont->GetFontDict(), FALSE);
   return pFont->m_pDocument->GetRenderData()->GetCachedType3(pFont);
 }
 static void ReleaseCachedType3(CPDF_Type3Font* pFont) {
-  if (pFont->m_pDocument == NULL) {
+  if (!pFont->m_pDocument) {
     return;
   }
   pFont->m_pDocument->GetRenderData()->ReleaseCachedType3(pFont);
   pFont->m_pDocument->GetPageData()->ReleaseFont(pFont->GetFontDict());
 }
 FX_BOOL CPDF_Type3Char::LoadBitmap(CPDF_RenderContext* pContext) {
-  if (m_pBitmap || m_pForm == NULL) {
+  if (m_pBitmap || !m_pForm) {
     return TRUE;
   }
   if (m_pForm->CountObjects() == 1 && !m_bColored) {
@@ -390,7 +390,7 @@ FX_BOOL CPDF_RenderStatus::ProcessType3Text(
       continue;
     }
     CPDF_Type3Char* pType3Char = pType3Font->LoadChar(charcode);
-    if (pType3Char == NULL) {
+    if (!pType3Char) {
       continue;
     }
     CFX_AffineMatrix matrix = char_matrix;
@@ -401,7 +401,7 @@ FX_BOOL CPDF_RenderStatus::ProcessType3Text(
       if (pGlyphAndPos) {
         for (int i = 0; i < iChar; i++) {
           FXTEXT_GLYPHPOS& glyph = pGlyphAndPos[i];
-          if (glyph.m_pGlyph == NULL) {
+          if (!glyph.m_pGlyph) {
             continue;
           }
           m_pDevice->SetBitMask(&glyph.m_pGlyph->m_Bitmap,
@@ -459,7 +459,7 @@ FX_BOOL CPDF_RenderStatus::ProcessType3Text(
         CPDF_Type3Cache* pCache = GetCachedType3(pType3Font);
         refTypeCache.m_dwCount++;
         CFX_GlyphBitmap* pBitmap = pCache->LoadGlyph(charcode, &matrix, sa, sd);
-        if (pBitmap == NULL) {
+        if (!pBitmap) {
           continue;
         }
         int origin_x = FXSYS_round(matrix.e);
@@ -498,7 +498,7 @@ FX_BOOL CPDF_RenderStatus::ProcessType3Text(
     bitmap.Clear(0);
     for (int iChar = 0; iChar < textobj->m_nChars; iChar++) {
       FXTEXT_GLYPHPOS& glyph = pGlyphAndPos[iChar];
-      if (glyph.m_pGlyph == NULL) {
+      if (!glyph.m_pGlyph) {
         continue;
       }
       bitmap.TransferBitmap(
@@ -564,7 +564,7 @@ void CPDF_CharPosList::Load(int nChars,
     charpos.m_OriginX = iChar ? pCharPos[iChar - 1] : 0;
     charpos.m_OriginY = 0;
     charpos.m_bGlyphAdjust = FALSE;
-    if (pCIDFont == NULL) {
+    if (!pCIDFont) {
       continue;
     }
     FX_WORD CID = pCIDFont->CIDFromCharCode(CharCode);
@@ -770,7 +770,7 @@ void CPDF_RenderStatus::DrawTextPathWithPattern(
     FXTEXT_CHARPOS& charpos = CharPosList.m_pCharPos[i];
     const CFX_PathData* pPath = pFaceCache->LoadGlyphPath(
         &pFont->m_Font, charpos.m_GlyphIndex, charpos.m_FontCharWidth);
-    if (pPath == NULL) {
+    if (!pPath) {
       continue;
     }
     CPDF_PathObject path;