C++20: Use designated initializers

I wasn't pedantic on where to use them.

Change-Id: I0cb38d422ebb2fe274495183ffc31d60078d3245
diff --git a/src/cli-netconf.cpp b/src/cli-netconf.cpp
index 4f9275a..b70e7bc 100644
--- a/src/cli-netconf.cpp
+++ b/src/cli-netconf.cpp
@@ -32,5 +32,5 @@
             "netconf",
             bp::std_out > out, bp::std_in < in);
 
-    return {std::move(ssh), std::move(in), std::move(out)};
+    return {.process = std::move(ssh), .std_in = std::move(in), .std_out = std::move(out)};
 }