Get rid of NULLs in xfa/fxbarcode/

xfa/fxbarcode/oned/BC_OnedEAN8Writer.cpp

Index: xfa/fxbarcode/oned/BC_OnedEAN8Writer.cpp
diff --git a/xfa/fxbarcode/oned/BC_OnedEAN8Writer.cpp b/xfa/fxbarcode/oned/BC_OnedEAN8Writer.cpp
index 2aa57d18d1b29ad9deb460fc717de02b7a7c0ac4..f4a4dc86e11c6a4a71ea2b71dea505408636fd42 100644
--- a/xfa/fxbarcode/oned/BC_OnedEAN8Writer.cpp
+++ b/xfa/fxbarcode/oned/BC_OnedEAN8Writer.cpp
@@ -92,7 +92,7 @@ uint8_t* CBC_OnedEAN8Writer::Encode(const CFX_ByteString& contents,
                                     int32_t& outHeight,
                                     int32_t& e) {
   uint8_t* ret = Encode(contents, format, outWidth, outHeight, 0, e);
-  BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
+  BC_EXCEPTION_CHECK_ReturnValue(e, nullptr);
   return ret;
 }
 uint8_t* CBC_OnedEAN8Writer::Encode(const CFX_ByteString& contents,
@@ -103,11 +103,11 @@ uint8_t* CBC_OnedEAN8Writer::Encode(const CFX_ByteString& contents,
                                     int32_t& e) {
   if (format != BCFORMAT_EAN_8) {
     e = BCExceptionOnlyEncodeEAN_8;
-    return NULL;
+    return nullptr;
   }
   uint8_t* ret =
       CBC_OneDimWriter::Encode(contents, format, outWidth, outHeight, hints, e);
-  BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
+  BC_EXCEPTION_CHECK_ReturnValue(e, nullptr);
   return ret;
 }
 uint8_t* CBC_OnedEAN8Writer::Encode(const CFX_ByteString& contents,
@@ -115,7 +115,7 @@ uint8_t* CBC_OnedEAN8Writer::Encode(const CFX_ByteString& contents,
                                     int32_t& e) {
   if (contents.GetLength() != 8) {
     e = BCExceptionDigitLengthMustBe8;
-    return NULL;
+    return nullptr;
   }
   outLength = m_codeWidth;
   uint8_t* result = FX_Alloc(uint8_t, m_codeWidth);
@@ -124,7 +124,7 @@ uint8_t* CBC_OnedEAN8Writer::Encode(const CFX_ByteString& contents,
       AppendPattern(result, pos, CBC_OneDimReader::START_END_PATTERN, 3, 1, e);
   if (e != BCExceptionNO) {
     FX_Free(result);
-    return NULL;
+    return nullptr;
   }
   int32_t i = 0;
   for (i = 0; i <= 3; i++) {
@@ -133,13 +133,13 @@ uint8_t* CBC_OnedEAN8Writer::Encode(const CFX_ByteString& contents,
                          e);
     if (e != BCExceptionNO) {
       FX_Free(result);
-      return NULL;
+      return nullptr;
     }
   }
   pos += AppendPattern(result, pos, CBC_OneDimReader::MIDDLE_PATTERN, 5, 0, e);
   if (e != BCExceptionNO) {
     FX_Free(result);
-    return NULL;
+    return nullptr;
   }
   for (i = 4; i <= 7; i++) {
     int32_t digit = FXSYS_atoi(contents.Mid(i, 1).c_str());
@@ -147,14 +147,14 @@ uint8_t* CBC_OnedEAN8Writer::Encode(const CFX_ByteString& contents,
                          e);
     if (e != BCExceptionNO) {
       FX_Free(result);
-      return NULL;
+      return nullptr;
     }
   }
   pos +=
       AppendPattern(result, pos, CBC_OneDimReader::START_END_PATTERN, 3, 1, e);
   if (e != BCExceptionNO) {
     FX_Free(result);
-    return NULL;
+    return nullptr;
   }
   return result;
 }