Auto merge of #27003 - saschanaz:py3-msvc-deps, r=jdm

Fix Py3 failures when installing MSVC dependencies

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- [ ] `./mach test-tidy` does not report any errors
- [ ] These changes fix #___ (GitHub issue number if applicable)

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1 files changed, 1 insertions, 1 deletions

diff --git a/python/servo/command_base.py b/python/servo/command_base.py
index db9f550e61d..726afd0d0c7 100644
--- a/python/servo/command_base.py
+++ b/python/servo/command_base.py
@@ -216,7 +216,7 @@ def is_linux():
 def append_to_path_env(string, env, name):
     variable = ""
     if name in env:
-        variable = env[name]
+        variable = six.ensure_str(env[name])
         if len(variable) > 0:
             variable += os.pathsep
     variable += string