Support Wine 6.23's fixed winedbg arg handling

I was about to rebase the patch I've been resubmitting to Wine that
fixed this when I noticed that
https://github.com/wine-mirror/wine/commit/94ca4be2a62cdb05adaee524084875b04b283afb
now does the same thing.

src/plugin/host-process.cpp

@@ -67,10 +67,10 @@ IndividualHost::IndividualHost(boost::asio::io_context& io_context,
       host(
           launch_host(host_path,
                       plugin_type_to_string(host_request.plugin_type),
-#ifdef WITH_WINEDBG
-                      // Winedbg flattens all command line arguments to a single
-                      // space separate Win32 command line, so we need to do our
-                      // own quoting.
+#if defined(WITH_WINEDBG) && defined(WINEDBG_LEGACY_ARGUMENT_QUOTING)
+                      // Old versions of winedbg flattened all command line
+                      // arguments to a single space separated Win32 command
+                      // line, so we had to do our own quoting
                       "\"" + plugin_info.windows_plugin_path + "\"",
 #else
                       host_request.plugin_path,

src/plugin/host-process.h

@@ -77,14 +77,19 @@ class HostProcess {
             // window managers require some slight modifications to spawn a
             // detached terminal emulator. Alternatively, you can spawn
             // `/usr/bin/winedbg` with the `--no-start` option to launch a gdb
-            // server and then connect to it from another terminal. Note the
-            // double quoting here, winedbg doesn't respect `argv` and instead
-            // expects a standard Win32 command line.
+            // server and then connect to it from another terminal.
             "/usr/bin/kstart5", "konsole", "--", "-e", "winedbg", "--gdb",
+#ifdef WINEDBG_LEGACY_ARGUMENT_QUOTING
+            // Note the double quoting here. Old versions of winedbg didn't
+            // respect `argv` and instead expected a pre-quoted Win32 command
+            // line as its arguments.
             "\"" + host_path.string() + ".so\"",
+#else
+            host_path.string() + ".so",
+#endif  // WINEDBG_LEGACY_ARGUMENT_QUOTING
 #else
             host_path,
-#endif
+#endif  // WITH_WINEDBG
             boost::process::std_out = stdout_pipe,
             boost::process::std_err = stderr_pipe,
             // NOTE: If the Wine process outlives the host, then it may cause