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mem leak fix for cpi->tplist

checks added to make sure that cpi->tplist
is freed correctly in vp8_dealloc_compressor_data
and vp8_alloc_compressor_data.

Change-Id: I66149dbbd25c958800ad94f4379d723191d9680d

--- a/vp8/encoder/onyx_if.c

+++ b/vp8/encoder/onyx_if.c

@@ -262,7 +262,8 @@

 void vp8_dealloc_compressor_data(VP8_COMP *cpi)

 {

-    vpx_free(cpi->tplist);

+    if(cpi->tplist!=0)

+        vpx_free(cpi->tplist);

     cpi->tplist = NULL;

     // Delete last frame MV storage buffers

@@ -1405,6 +1406,9 @@

     else

         cpi->mt_sync_range = 16;

 #endif

+

+    if(cpi->tplist);

+        vpx_free(cpi->tplist);

     CHECK_MEM_ERROR(cpi->tplist, vpx_malloc(sizeof(TOKENLIST) * cpi->common.mb_rows));

 }