fullbench: added streaming with fresh CCtx scenario

worst case situation, where context must be recreated every time
but without knowledge of the input size
thus sizing the context for some large input.

tests/fullbench.c

@@ -160,6 +160,19 @@ local_ZSTD_compressStream(const void* src, size_t srcSize,
     return buffOut.pos;
 }
 
+static size_t
+local_ZSTD_compressStream_freshCCtx(const void* src, size_t srcSize,
+                          void* dst, size_t dstCapacity,
+                          void* buff2)
+{
+    ZSTD_CCtx* const cctx = ZSTD_createCCtx();
+    assert(cctx != NULL);
+
+    return local_ZSTD_compressStream(src, srcSize, dst, dstCapacity, buff2);
+
+    ZSTD_freeCCtx(cctx);
+}
+
 static size_t
 local_ZSTD_compress_generic_end(const void* src, size_t srcSize,
                                 void* dst, size_t dstCapacity,
@@ -354,6 +367,9 @@ static int benchMem(unsigned benchNb,
     case 42:
         benchFunction = local_ZSTD_decompressStream; benchName = "decompressStream";
         break;
+    case 43:
+        benchFunction = local_ZSTD_compressStream_freshCCtx; benchName = "compressStream_freshCCtx";
+        break;
     case 51:
         benchFunction = local_ZSTD_compress_generic_continue; benchName = "compress_generic, continue";
         break;