fix potential make clean error
@@ -319,7 +319,7 @@ clean:
$(MAKE) -C qemu_mode/unsigaction clean
$(MAKE) -C qemu_mode/libcompcov clean
$(MAKE) -C src/third_party/libradamsa/ clean
- $(MAKE) -C unicorn_mode/unicorn clean
+ -$(MAKE) -C unicorn_mode/unicorn clean
distrib: all radamsa
-$(MAKE) -C llvm_mode
