Change prefix detection to be relative to the .dll

CHANGELOG.md

@@ -22,6 +22,8 @@ Versioning](https://semver.org/spec/v2.0.0.html).
   symlinking plugins. Now you can use a symlink to a copy of `libyabridge.so`
   that's installed for a plugin in another directory. This is not recommended
   though. Fixes #3.
+- Changed Wine prefix detection to be relative to the plugin's `.dll` file,
+  rather than the loaded `.so` file.
 - Clarified the error that appears when we're unable to load the `.dll`.
 
 ### Fixed

src/plugin/host-bridge.cpp

@@ -646,9 +646,10 @@ std::string create_logger_prefix(const fs::path& socket_path) {
 }
 
 std::optional<fs::path> find_wineprefix() {
-    // Try to locate the Wine prefix this .so file is located in by finding the
+    // Try to locate the Wine prefix the plugin's .dll file is located in by
-    // first parent directory that contains a directory named `dosdevices`
+    // finding the first parent directory that contains a directory named
-    fs::path wineprefix_path = get_this_file_location().remove_filename();
+    // `dosdevices`
+    fs::path wineprefix_path = find_vst_plugin();
     while (wineprefix_path != "") {
         if (fs::is_directory(wineprefix_path / "dosdevices")) {
             return wineprefix_path;