[PATCH 2/2] Makefile: clang-tools: Omit printing stack trace when KeyboardInterrupt is raised

[Maciej Falkowski]

When user terminates the script (also implicitly through for example
`make clang-analyzer`) by using
Ctrl+C (or sending SIGINT more generally) the KeyboardInterrupt
is raised printing stack trace of the execution as shown below:

$ ./scripts/clang-tools/run-clang-tools.py clang-tidy ./compile_commands.json
^CTraceback (most recent call last):
  File "./scripts/clang-tools/run-clang-tools.py", line 74, in <module>
    main()
  File "./scripts/clang-tools/run-clang-tools.py", line 70, in main
    pool.map(run_analysis, datastore)
  File "/usr/lib64/python3.8/multiprocessing/pool.py", line 364, in map
    return self._map_async(func, iterable, mapstar, chunksize).get()
  File "/usr/lib64/python3.8/multiprocessing/pool.py", line 765, in get
    self.wait(timeout)
  File "/usr/lib64/python3.8/multiprocessing/pool.py", line 762, in wait
    self._event.wait(timeout)
  File "/usr/lib64/python3.8/threading.py", line 558, in wait
Process ForkPoolWorker-6:
Process ForkPoolWorker-1:
Process ForkPoolWorker-5:
Process ForkPoolWorker-7:
Process ForkPoolWorker-2:
Process ForkPoolWorker-3:
Process ForkPoolWorker-4:
Process ForkPoolWorker-8:
    signaled = self._cond.wait(timeout)
  File "/usr/lib64/python3.8/threading.py", line 302, in wait
    waiter.acquire()
KeyboardInterrupt

The patch handles the raise of the KeyboardInterrupt and exits when occurred
with code 130 as documented in: https://tldp.org/LDP/abs/html/exitcodes.html

Signed-off-by: Maciej Falkowski <maciej.falkowski9@xxxxxxxxx>
---
 scripts/clang-tools/run-clang-tools.py | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/scripts/clang-tools/run-clang-tools.py b/scripts/clang-tools/run-clang-tools.py
index 38fc311d2e03..eb0e0ecfce24 100755
--- a/scripts/clang-tools/run-clang-tools.py
+++ b/scripts/clang-tools/run-clang-tools.py
@@ -77,4 +77,7 @@ def main():
 
 
 if __name__ == "__main__":
-    main()
+    try:
+        main()
+    except KeyboardInterrupt:
+        sys.exit(130)
-- 
2.26.3