Fix issue reported by address sanitizer

The sanitizer reports that a call to getBrickIdxBsMap() tries
to access an out-of-bounds element. The size of the array
brickIdxBsMap[] is thus increased by 1 and its last element is
initialized to some large value

source/Lib/CommonLib/Picture.cpp

@@ -471,11 +471,14 @@ void BrickMap::create( const SPS& sps, const PPS& pps )
   numTileRows    = pps.getNumTileRowsMinus1() + 1;
   numTiles       = numTileColumns * numTileRows;
 
-  const uint32_t numCtusInFrame = pcv->sizeInCtus;
+  const size_t numCtusInFrame = pcv->sizeInCtus;
+
   brickIdxRsMap    = new uint32_t[numCtusInFrame];
-  brickIdxBsMap    = new uint32_t[numCtusInFrame];
-  ctuBsToRsAddrMap = new uint32_t[numCtusInFrame+1];
-  ctuRsToBsAddrMap = new uint32_t[numCtusInFrame+1];
+  brickIdxBsMap    = new uint32_t[numCtusInFrame + 1];
+  ctuBsToRsAddrMap = new uint32_t[numCtusInFrame + 1];
+  ctuRsToBsAddrMap = new uint32_t[numCtusInFrame + 1];
+
+  brickIdxBsMap[numCtusInFrame] = ~0u;   // Initialize last element to some large value
 
   initBrickMap( sps, pps );