*: doxygen fixups

src/filter/FilterConfig.hxx

@@ -34,7 +34,7 @@ class Error;
  * configured filter sections.
  * @param chain the chain to append filters on
  * @param spec the filter chain specification
- * @param error_r space to return an error description
+ * @param error space to return an error description
  * @return true on success
  */
 bool

src/filter/FilterInternal.hxx

@@ -38,12 +38,10 @@ public:
 	/**
 	 * Opens the filter, preparing it for FilterPCM().
 	 *
-	 * @param filter the filter object
 	 * @param af the audio format of incoming data; the
 	 * plugin may modify the object to enforce another input
 	 * format
-	 * @param error location to store the error occurring, or nullptr
-	 * to ignore errors.
+	 * @param error location to store the error occurring
 	 * @return the format of outgoing data or
 	 * AudioFormat::Undefined() on error
 	 */
@@ -57,10 +55,8 @@ public:
 	/**
 	 * Filters a block of PCM data.
 	 *
-	 * @param filter the filter object
 	 * @param src the input buffer
-	 * @param error location to store the error occurring, or nullptr
-	 * to ignore errors.
+	 * @param error location to store the error occurring
 	 * @return the destination buffer on success (will be
 	 * invalidated by Close() or FilterPCM()), nullptr on
 	 * error

src/filter/FilterPlugin.hxx

@@ -43,7 +43,7 @@ struct filter_plugin {
  * Creates a new instance of the specified filter plugin.
  *
  * @param plugin the filter plugin
- * @param param optional configuration section
+ * @param block configuration section
  * @param error location to store the error occurring, or nullptr to
  * ignore errors.
  * @return a new filter object, or nullptr on error
@@ -56,7 +56,7 @@ filter_new(const struct filter_plugin *plugin,
  * Creates a new filter, loads configuration and the plugin name from
  * the specified configuration section.
  *
- * @param param the configuration section
+ * @param block the configuration section
  * @param error location to store the error occurring, or nullptr to
  * ignore errors.
  * @return a new filter object, or nullptr on error

src/filter/plugins/ReplayGainFilterPlugin.hxx

@@ -38,9 +38,9 @@ replay_gain_filter_set_mixer(Filter *_filter, Mixer *mixer,
 			     unsigned base);
 
 /**
- * Sets a new #replay_gain_info at the beginning of a new song.
+ * Sets a new #ReplayGainInfo at the beginning of a new song.
  *
- * @param info the new #replay_gain_info value, or nullptr if no replay
+ * @param info the new #ReplayGainInfo value, or nullptr if no replay
  * gain data is available for the current song
  */
 void