west: main: fix incorrect use of sys.argv

The argument array to main is in the argv argument, *not* sys.argv.
Fix this.

(Using sys.argv directly prevents the main function from getting its
arguments from an arbitrary value specified by the caller.)

Signed-off-by: Marti Bolivar <marti@foundries.io>

src/west/main.py

@@ -219,7 +219,7 @@ def main(argv=None):
     except WestUpdated:
         # West has been automatically updated. Restart ourselves to run the
         # latest version, with the same arguments that we were given.
-        os.execv(sys.executable, [sys.executable] + sys.argv)
+        os.execv(sys.executable, [sys.executable] + argv)
     except KeyboardInterrupt:
         sys.exit(0)
     except CalledProcessError as cpe: