bpo-41005: Fixed perrmission error (GH-20936) (GH-21051)

* fixed issue 41005: webbrowser fails when xdg-settings cannot be executed Co-authored-by: KrishnaSai2020 <krishnasai.chivukula@gmal.com> Co-authored-by: blurb-it[bot] <43283697+blurb-it[bot]@users.noreply.github.com> (cherry picked from commit 9e27bc0) Co-authored-by: Krishna Chivukula <63070026+KrishnaSai2020@users.noreply.github.com> Co-authored-by: Krishna Chivukula <63070026+KrishnaSai2020@users.noreply.github.com>

Author: miss-islington

Lib/webbrowser.py

@@ -550,7 +550,7 @@ def register_standard_browsers():
  cmd = "xdg-settings get default-web-browser".split()
  raw_result = subprocess.check_output(cmd, stderr=subprocess.DEVNULL)
  result = raw_result.decode().strip()
- except (FileNotFoundError, subprocess.CalledProcessError):
+ except (FileNotFoundError, subprocess.CalledProcessError, PermissionError) :
  pass
  else:
  global _os_preferred_browser

Misc/NEWS.d/next/macOS/2020-06-17-13-45-15.bpo-41005.zZegdV.rst

@@ -0,0 +1 @@
+fixed an XDG settings issue not allowing macos to open browser in webbrowser.py