gh-101283: Fix use of unbound variable (GH-101712)

diff --git a/Lib/subprocess.py b/Lib/subprocess.py
index fa527d50ebb44d5635d804e4051779d3d946bbe6..1f203bd00d350031161c3b893425f48a44318f0f 100644 (file)
--- a/Lib/subprocess.py
+++ b/Lib/subprocess.py
@@ -1494,6 +1494,8 @@ class Popen:
                             raise FileNotFoundError('shell not found: neither %ComSpec% nor %SystemRoot% is set')
                     if os.path.isabs(comspec):
                         executable = comspec
+                else:
+                    comspec = executable
 
                 args = '{} /c "{}"'.format (comspec, args)