[PATCH v3 6/8] git-contributors: make revspec required and shebang fix

[Andrey Albershteyn <aalbersh@redhat.com>]

Without default value script will show help instead of just hanging
waiting for input on stdin.

Shebang fix for system with different python location than the
/usr/bin one.

Signed-off-by: Andrey Albershteyn <aalbersh@kernel.org>
---
 tools/git-contributors.py | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/tools/git-contributors.py b/tools/git-contributors.py
index 83bbe8ce0ee1dcbd591c6d3016d553fac2a7d286..628d6d0b4d8795e10b1317fa6fc91c6b98b21f3e 100755
--- a/tools/git-contributors.py
+++ b/tools/git-contributors.py
@@ -1,4 +1,4 @@
-#!/usr/bin/python3
+#!/usr/bin/env python3
 
 # List all contributors to a series of git commits.
 # Copyright(C) 2025 Oracle, All Rights Reserved.
@@ -71,8 +71,7 @@ class find_developers(object):
 
 def main():
     parser = argparse.ArgumentParser(description = "List email addresses of contributors to a series of git commits.")
-    parser.add_argument("revspec", nargs = '?', default = None, \
-            help = "git revisions to process.")
+    parser.add_argument("revspec", help = "git revisions to process.")
     parser.add_argument("--delimiter", type = str, default = '\n', \
             help = "Separate each email address with this string.")
     args = parser.parse_args()

-- 
2.47.2