[PATCH] scripts/show_delta: add __main__ judgement before main code

[Hu Haowen]

When doing Python programming it is a nice convention to insert the if
statement `if __name__ == "__main__":` before any main code that does
actual functionalities to ensure the code will be executed only as a
script rather than as an imported module. Hence attach the missing
judgement to show_delta.

Signed-off-by: Hu Haowen <2023002089@xxxxxxxxxxxxxxxx>
---
 scripts/show_delta | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/scripts/show_delta b/scripts/show_delta
index 28e67e178194..291ad65e3089 100755
--- a/scripts/show_delta
+++ b/scripts/show_delta
@@ -125,4 +125,5 @@ def main():
 	for line in lines:
 		print (convert_line(line, base_time),)
 
-main()
+if __name__ == "__main__":
+	main()
-- 
2.34.1