[fuzzer] Fix collect_data_flow.py for python 3

llvm-svn: 334901
diff --git a/compiler-rt/lib/fuzzer/scripts/collect_data_flow.py b/compiler-rt/lib/fuzzer/scripts/collect_data_flow.py
index c3faf71..341b1fe8 100755
--- a/compiler-rt/lib/fuzzer/scripts/collect_data_flow.py
+++ b/compiler-rt/lib/fuzzer/scripts/collect_data_flow.py
@@ -29,7 +29,7 @@
 tmpdir = ""
 
 def cleanup(d):
-  print "removing: ", d
+  print("removing: ", d)
   shutil.rmtree(d)
 
 def collect_dataflow_for_corpus(self, exe, corpus_dir, output_dir):