removed new huffman depth heuristic

results are now identical to before this PR

lib/compress/huf_compress.c

@@ -143,7 +143,10 @@ typedef struct {
     S16 norm[HUF_TABLELOG_MAX+1];
 } HUF_CompressWeightsWksp;
 
-static size_t HUF_compressWeights(void* dst, size_t dstSize, const void* weightTable, size_t wtSize, void* workspace, size_t workspaceSize)
+static size_t
+HUF_compressWeights(void* dst, size_t dstSize,
+              const void* weightTable, size_t wtSize,
+                    void* workspace, size_t workspaceSize)
 {
     BYTE* const ostart = (BYTE*) dst;
     BYTE* op = ostart;
@@ -731,18 +734,6 @@ static void HUF_buildCTableFromTree(HUF_CElt* CTable, nodeElt const* huffNode, i
     CTable[0] = maxNbBits;
 }
 
-static size_t
-HUF_nbSymbolsTooLarge(const nodeElt* hnodes, U32 maxSymbolValue, U32 maxNbBits)
-{
-    size_t nbSTL = 0;
-    int s = (int)maxSymbolValue;
-    for ( ; s > 0; s-- ) {
-        if (hnodes[s].nbBits > maxNbBits) nbSTL++;
-        else break;
-    }
-    return nbSTL;
-}
-
 size_t
 HUF_buildCTable_wksp(HUF_CElt* CTable, const unsigned* count, U32 maxSymbolValue, U32 maxNbBits,
                      void* workSpace, size_t wkspSize)
@@ -771,16 +762,6 @@ HUF_buildCTable_wksp(HUF_CElt* CTable, const unsigned* count, U32 maxSymbolValue
     nonNullRank = HUF_buildTree(huffNode, maxSymbolValue);
 
     /* determine and enforce maxTableLog */
-    /* Loosen target when maxNbBits is already within limits.
-     * A harsh rebalancing can be bad for compression ratio
-     * while a mild one tends to be better */
-    while (maxNbBits < HUF_TABLELOG_DEFAULT) {
-        size_t const nbSTL = HUF_nbSymbolsTooLarge(huffNode, maxSymbolValue, maxNbBits);
-        #define HUF_NB_NODES_TO_FIX_MAX 32
-        if (nbSTL < HUF_NB_NODES_TO_FIX_MAX) /* heuristic */
-            break;
-        maxNbBits++;
-    }
     maxNbBits = HUF_setMaxHeight(huffNode, (U32)nonNullRank, maxNbBits);
     if (maxNbBits > HUF_TABLELOG_MAX) return ERROR(GENERIC);   /* check fit into table */