fixup! Fix sync script: using shell for windows

rogerwang · rogerwang · commit c4718e00a8bc · 2018-09-25T00:25:13.000-06:00
diff --git a/tools/sync.py b/tools/sync.py
@@ -23,4 +23,4 @@
 print gclient_root
 
 os.chdir(gclient_root)
-sys.exit(sp.call(cmd, shell=True))
+sys.exit(sp.call(cmd, shell=(os.name == 'nt')))
