shithub: openh264

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set null when buffer is released

--- a/codec/processing/src/downsample/downsample.cpp

+++ b/codec/processing/src/downsample/downsample.cpp

@@ -73,8 +73,11 @@

 void CDownsampling::FreeSampleBuffer() {

   for (int32_t i = 0; i < 2; i++) {

     WelsFree (m_pSampleBuffer[i][0]);

+    m_pSampleBuffer[i][0] = NULL;

     WelsFree (m_pSampleBuffer[i][1]);

+    m_pSampleBuffer[i][1] = NULL;

     WelsFree (m_pSampleBuffer[i][2]);

+    m_pSampleBuffer[i][2] = NULL;

   }

 }