remove null chars added by conda in default path

src/dtkComposer/dtkComposer.cpp

@@ -114,8 +114,9 @@ namespace dtkComposer
                 composer_settings.endGroup();
 
                 if (realpath.isEmpty()) {
-
-                    realpath = QDir(DTK_INSTALL_PREFIX).filePath("plugins/dtkComposer");
+                    QString dtk_prefix = DTK_INSTALL_PREFIX;
+                    // ugly: remove null characters added by conda
+                    realpath = QDir::cleanPath(dtk_prefix.remove(QChar::Null) + "/plugins/dtkComposer");
                     dtkDebug() << "no composer plugin path configured, use default:" << realpath ;
                 }
                 pluginManager().initialize(realpath);