Don't bother checking pointers before delete[] and FX_Free().

core/src/fxcodec/codec/fx_codec_flate.cpp

Index: core/src/fxcodec/codec/fx_codec_flate.cpp
diff --git a/core/src/fxcodec/codec/fx_codec_flate.cpp b/core/src/fxcodec/codec/fx_codec_flate.cpp
index a4b37c1ca3629ac319ed0c47e1cd01c1aa2b8c59..e8878e453524d58e28c991315a9189c3582d8cdb 100644
--- a/core/src/fxcodec/codec/fx_codec_flate.cpp
+++ b/core/src/fxcodec/codec/fx_codec_flate.cpp
@@ -647,18 +647,10 @@ CCodec_FlateScanlineDecoder::CCodec_FlateScanlineDecoder() {
   m_LeftOver = 0;
 }
 CCodec_FlateScanlineDecoder::~CCodec_FlateScanlineDecoder() {
-  if (m_pScanline) {
-    FX_Free(m_pScanline);
-  }
-  if (m_pLastLine) {
-    FX_Free(m_pLastLine);
-  }
-  if (m_pPredictBuffer) {
-    FX_Free(m_pPredictBuffer);
-  }
-  if (m_pPredictRaw) {
-    FX_Free(m_pPredictRaw);
-  }
+  FX_Free(m_pScanline);
+  FX_Free(m_pLastLine);
+  FX_Free(m_pPredictBuffer);
+  FX_Free(m_pPredictRaw);
   if (m_pFlate) {
     FPDFAPI_FlateEnd(m_pFlate);
   }