Remove foo != NULL checks in xfa/src/fxbarcode.

xfa/src/fxbarcode/common/BC_CommonByteArray.cpp

Index: xfa/src/fxbarcode/common/BC_CommonByteArray.cpp
diff --git a/xfa/src/fxbarcode/common/BC_CommonByteArray.cpp b/xfa/src/fxbarcode/common/BC_CommonByteArray.cpp
index e085ffcec2c192269d01416fe3f2d0fdba101049..1a6ef9f63fa59e67325f0a4ad33eefcd05e1d81b 100644
--- a/xfa/src/fxbarcode/common/BC_CommonByteArray.cpp
+++ b/xfa/src/fxbarcode/common/BC_CommonByteArray.cpp
@@ -42,12 +42,7 @@ CBC_CommonByteArray::CBC_CommonByteArray(uint8_t* byteArray, int32_t size) {
   m_index = size;
 }
 CBC_CommonByteArray::~CBC_CommonByteArray() {
-  if (m_bytes != NULL) {
-    FX_Free(m_bytes);
-    m_bytes = NULL;
-  }
-  m_index = 0;
-  m_size = 0;
+  FX_Free(m_bytes);
 }
 int32_t CBC_CommonByteArray::At(int32_t index) {
   return m_bytes[index] & 0xff;
@@ -72,19 +67,19 @@ void CBC_CommonByteArray::AppendByte(int32_t value) {
 void CBC_CommonByteArray::Reserve(int32_t capacity) {
   if (m_bytes == NULL || m_size < capacity) {
     uint8_t* newArray = FX_Alloc(uint8_t, capacity);
-    FXSYS_memset(newArray, 0, capacity);
-    if (m_bytes != NULL) {
+    if (m_bytes) {
       FXSYS_memcpy(newArray, m_bytes, m_size);
-      FX_Free(m_bytes);
+      FXSYS_memset(newArray + m_size, 0, capacity - m_size);
+    } else {
+      FXSYS_memset(newArray, 0, capacity);
     }
+    FX_Free(m_bytes);
     m_bytes = newArray;
     m_size = capacity;
   }
 }
 void CBC_CommonByteArray::Set(uint8_t* source, int32_t offset, int32_t count) {
-  if (m_bytes != NULL) {
-    FX_Free(m_bytes);
-  }
+  FX_Free(m_bytes);
   m_bytes = FX_Alloc(uint8_t, count);
   m_size = count;
   FXSYS_memcpy(m_bytes, source + offset, count);
@@ -93,9 +88,7 @@ void CBC_CommonByteArray::Set(uint8_t* source, int32_t offset, int32_t count) {
 void CBC_CommonByteArray::Set(CFX_ByteArray* source,
                               int32_t offset,
                               int32_t count) {
-  if (m_bytes != NULL) {
-    FX_Free(m_bytes);
-  }
+  FX_Free(m_bytes);
   m_bytes = FX_Alloc(uint8_t, count);
   m_size = count;
   int32_t i;