Get rid of NULLs in core/

core/fpdfapi/fpdf_cmaps/CNS1/cmaps_cns1.cpp

Index: core/fpdfapi/fpdf_cmaps/CNS1/cmaps_cns1.cpp
diff --git a/core/fpdfapi/fpdf_cmaps/CNS1/cmaps_cns1.cpp b/core/fpdfapi/fpdf_cmaps/CNS1/cmaps_cns1.cpp
index 119c42b5c147acabc93926690e3c2ee4f5b62025..2da119778738296be39a034bb287bd307e1b7546 100644
--- a/core/fpdfapi/fpdf_cmaps/CNS1/cmaps_cns1.cpp
+++ b/core/fpdfapi/fpdf_cmaps/CNS1/cmaps_cns1.cpp
@@ -14,33 +14,33 @@
 
 static const FXCMAP_CMap g_FXCMAP_CNS1_cmaps[] = {
     {"B5pc-H", FXCMAP_CMap::Range, g_FXCMAP_B5pc_H_0, 247, FXCMAP_CMap::None,
-     NULL, 0, 0},
+     nullptr, 0, 0},
     {"B5pc-V", FXCMAP_CMap::Range, g_FXCMAP_B5pc_V_0, 12, FXCMAP_CMap::None,
-     NULL, 0, -1},
+     nullptr, 0, -1},
     {"HKscs-B5-H", FXCMAP_CMap::Range, g_FXCMAP_HKscs_B5_H_5, 1210,
-     FXCMAP_CMap::None, NULL, 0, 0},
+     FXCMAP_CMap::None, nullptr, 0, 0},
     {"HKscs-B5-V", FXCMAP_CMap::Range, g_FXCMAP_HKscs_B5_V_5, 13,
-     FXCMAP_CMap::None, NULL, 0, -1},
+     FXCMAP_CMap::None, nullptr, 0, -1},
     {"ETen-B5-H", FXCMAP_CMap::Range, g_FXCMAP_ETen_B5_H_0, 254,
-     FXCMAP_CMap::None, NULL, 0, 0},
+     FXCMAP_CMap::None, nullptr, 0, 0},
     {"ETen-B5-V", FXCMAP_CMap::Range, g_FXCMAP_ETen_B5_V_0, 13,
-     FXCMAP_CMap::None, NULL, 0, -1},
+     FXCMAP_CMap::None, nullptr, 0, -1},
     {"ETenms-B5-H", FXCMAP_CMap::Range, g_FXCMAP_ETenms_B5_H_0, 1,
-     FXCMAP_CMap::None, NULL, 0, -2},
+     FXCMAP_CMap::None, nullptr, 0, -2},
     {"ETenms-B5-V", FXCMAP_CMap::Range, g_FXCMAP_ETenms_B5_V_0, 18,
-     FXCMAP_CMap::None, NULL, 0, -1},
+     FXCMAP_CMap::None, nullptr, 0, -1},
     {"CNS-EUC-H", FXCMAP_CMap::Range, g_FXCMAP_CNS_EUC_H_0, 157,
      FXCMAP_CMap::Range, g_FXCMAP_CNS_EUC_H_0_DWord, 238, 0},
     {"CNS-EUC-V", FXCMAP_CMap::Range, g_FXCMAP_CNS_EUC_V_0, 180,
      FXCMAP_CMap::Range, g_FXCMAP_CNS_EUC_V_0_DWord, 261, 0},
     {"UniCNS-UCS2-H", FXCMAP_CMap::Range, g_FXCMAP_UniCNS_UCS2_H_3, 16418,
-     FXCMAP_CMap::None, NULL, 0, 0},
+     FXCMAP_CMap::None, nullptr, 0, 0},
     {"UniCNS-UCS2-V", FXCMAP_CMap::Range, g_FXCMAP_UniCNS_UCS2_V_3, 13,
-     FXCMAP_CMap::None, NULL, 0, -1},
+     FXCMAP_CMap::None, nullptr, 0, -1},
     {"UniCNS-UTF16-H", FXCMAP_CMap::Single, g_FXCMAP_UniCNS_UTF16_H_0, 14557,
-     FXCMAP_CMap::None, NULL, 0, 0},
+     FXCMAP_CMap::None, nullptr, 0, 0},
     {"UniCNS-UTF16-V", FXCMAP_CMap::Range, g_FXCMAP_UniCNS_UCS2_V_3, 13,
-     FXCMAP_CMap::None, NULL, 0, -1},
+     FXCMAP_CMap::None, nullptr, 0, -1},
 };
 
 void CPDF_ModuleMgr::LoadEmbeddedCNS1CMaps() {