Add call to bench 61

bench/Makefile

@@ -54,6 +54,7 @@ bench-mlib-mempool:
 bench-mlib-thread:
 	$(CC) $(CFLAGS) $(CPPFLAGS) bench-mlib.c -DMULTI_THREAD_MEASURE -pthread -o bench-mlib-thread.exe
 	@./bench-mlib-thread.exe 60
+	@./bench-mlib-thread.exe 61
 
 bench-stl:
 	$(CXX) $(CFLAGS) $(CPPFLAGS) bench-stl.cpp -o bench-stl.exe