update kfuzz

Author: vanhauser-thc

fuzzers/kfuzz/builder.Dockerfile

@@ -37,7 +37,7 @@ RUN apt-get update && \
 # Download afl++.
 RUN git clone https://github.com/KFuzzing/KFuzz /afl && \
     cd /afl && \
-    git checkout 40dc2da4027eacd96ecab3536a7fc7feb9ef39b9 || \
+    git checkout 45f75436a7c81c76fea335ccfa8a06bc2340871a || \
     true
 
 # Build without Python support as we don't need it.

fuzzers/kfuzz/fuzzer.py

@@ -261,6 +261,8 @@ def fuzz(input_corpus,
     if os.path.exists('./afl++.dict'):
         flags += ['-x', './afl++.dict']
 
+    flags += ['-k']
+
     # Move the following to skip for upcoming _double tests:
     if os.path.exists(cmplog_target_binary) and no_cmplog is False:
         flags += ['-c', cmplog_target_binary]