advanced decompression function replaces by normal streaming one

advanced parameters compatible with ZSTD_decompressStream().

tests/paramgrill.c

@@ -948,7 +948,7 @@ static size_t local_defaultDecompress(
         if(out.pos == out.size) {
             return (size_t)-ZSTD_error_dstSize_tooSmall;
         }
-        moreToFlush = ZSTD_decompress_generic(dctx,
+        moreToFlush = ZSTD_decompressStream(dctx,
                             &out, &in);
         if (ZSTD_isError(moreToFlush)) {
             return moreToFlush;