osmoutil: return proc's return code from end_proc()

Change-Id: I1e11fcb6c5a587c27fc00920b6e157862d972fd9
Related: OS#5665
---
M osmopy/osmoutil.py
1 file changed, 13 insertions(+), 2 deletions(-)

diff --git a/osmopy/osmoutil.py b/osmopy/osmoutil.py
index ecd88f2..6ab16e7 100755
--- a/osmopy/osmoutil.py
+++ b/osmopy/osmoutil.py
@@ -42,9 +42,9 @@
 If the process doesn't appear to exist (for instance, is None), do nothing"""
 
 
-def end_proc(proc):
+def end_proc(proc):  # -> Optional[int]
     if not proc:
-        return
+        return None
 
     proc.terminate()
     time_to_wait_for_term = 5
@@ -70,6 +70,7 @@
         print("Terminating took %.3fs" % waited_time)
     rc = proc.wait()
     print("Process returned code: %d" % rc)
+    return rc
 
 
 """Add a directory to sys.path, try to import a config file."""

