From 15066559a554d38ed5d1ea6781f3be79621b20c1 Mon Sep 17 00:00:00 2001
From: Olaf Buddenhagen <antrik@users.sf.net>
Date: Wed, 4 May 2016 22:02:29 +0200
Subject: [PATCH] mach run --debug: Cleanup: Use nicer syntax in
 rust-gdb/rust-lldb check

Follow-up on f3cd5d2961d5493f17062562693608b73ced6128 : after actually
reading a Python tutorial, I realised this can be handled in a more
elegant fashion :-)
---
 python/servo/post_build_commands.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/python/servo/post_build_commands.py b/python/servo/post_build_commands.py
index 7bbb8c03ed5..3170e07437a 100644
--- a/python/servo/post_build_commands.py
+++ b/python/servo/post_build_commands.py
@@ -118,9 +118,10 @@ class PostBuildCommands(CommandBase):
                 rustCommand = 'rust-' + debugger
                 try:
                     subprocess.check_call([rustCommand, '--version'], env=env, stdout=open(os.devnull, 'w'))
-                    command = rustCommand
                 except (OSError, subprocess.CalledProcessError):
                     pass
+                else:
+                    command = rustCommand
 
             # Prepend the debugger args.
             args = ([command] + self.debuggerInfo.args +