fix(ssh): garbled output when directory has broken symlinks

The stderr was interleaving with the stdout when performing one of the
ls operations. This was causing the parsing to sometimes fail and crash.

lua/oil/adapters/ssh/sshfs.lua

@@ -175,28 +175,31 @@ function SSHFS:list_dir(url, path, callback)
     if any_links then
       -- If there were any soft links, then we need to run another ls command with -L so that we can
       -- resolve the type of the link target
-      self.conn:run("ls -aLl --color=never" .. path_postfix, function(link_err, link_lines)
-        -- Ignore exit code 1. That just means one of the links could not be resolved.
-        if link_err and not link_err:match("^1:") then
-          return callback(link_err)
-        end
-        assert(link_lines)
-        for _, line in ipairs(link_lines) do
-          if line ~= "" and not line:match("^total") then
-            local ok, name, type, meta = pcall(parse_ls_line, line)
-            if ok and name ~= "." and name ~= ".." then
-              local cache_entry = entries[name]
-              if cache_entry[FIELD_TYPE] == "link" then
-                cache_entry[FIELD_META].link_stat = {
-                  type = type,
-                  size = meta.size,
-                }
+      self.conn:run(
+        "ls -aLl --color=never" .. path_postfix .. " 2> /dev/null",
+        function(link_err, link_lines)
+          -- Ignore exit code 1. That just means one of the links could not be resolved.
+          if link_err and not link_err:match("^1:") then
+            return callback(link_err)
+          end
+          assert(link_lines)
+          for _, line in ipairs(link_lines) do
+            if line ~= "" and not line:match("^total") then
+              local ok, name, type, meta = pcall(parse_ls_line, line)
+              if ok and name ~= "." and name ~= ".." then
+                local cache_entry = entries[name]
+                if cache_entry[FIELD_TYPE] == "link" then
+                  cache_entry[FIELD_META].link_stat = {
+                    type = type,
+                    size = meta.size,
+                  }
+                end
               end
             end
           end
+          callback(nil, cache_entries)
         end
-        callback(nil, cache_entries)
-      end)
+      )
     else
       callback(nil, cache_entries)
     end