PlaylistPlugin, ConfigGlobal: use nullptr instead of NULL

src/ConfigGlobal.cxx

@@ -92,7 +92,7 @@ config_get_string(ConfigOption option, const char *default_value)
 {
 	const struct config_param *param = config_get_param(option);
 
-	if (param == NULL)
+	if (param == nullptr)
 		return default_value;
 
 	return param->value;
@@ -102,7 +102,7 @@ Path
 config_get_path(ConfigOption option, Error &error)
 {
 	const struct config_param *param = config_get_param(option);
-	if (param == NULL)
+	if (param == nullptr)
 		return Path::Null();
 
 	Path path = ParsePath(param->value, error);
@@ -120,7 +120,7 @@ config_get_unsigned(ConfigOption option, unsigned default_value)
 	long value;
 	char *endptr;
 
-	if (param == NULL)
+	if (param == nullptr)
 		return default_value;
 
 	value = strtol(param->value, &endptr, 0);
@@ -138,7 +138,7 @@ config_get_positive(ConfigOption option, unsigned default_value)
 	long value;
 	char *endptr;
 
-	if (param == NULL)
+	if (param == nullptr)
 		return default_value;
 
 	value = strtol(param->value, &endptr, 0);
@@ -157,7 +157,7 @@ config_get_bool(ConfigOption option, bool default_value)
 	const struct config_param *param = config_get_param(option);
 	bool success, value;
 
-	if (param == NULL)
+	if (param == nullptr)
 		return default_value;
 
 	success = get_bool(param->value, &value);

src/ConfigGlobal.hxx

@@ -23,8 +23,6 @@
 #include "ConfigOption.hxx"
 #include "gcc.h"
 
-#include <stddef.h>
-
 class Error;
 class Path;
 
@@ -41,7 +39,7 @@ bool
 ReadConfigFile(const Path &path, Error &error);
 
 /* don't free the returned value
-   set _last_ to NULL to get first entry */
+   set _last_ to nullptr to get first entry */
 gcc_pure
 const struct config_param *
 config_get_next_param(enum ConfigOption option,
@@ -51,7 +49,7 @@ gcc_pure
 static inline const struct config_param *
 config_get_param(enum ConfigOption option)
 {
-	return config_get_next_param(option, NULL);
+	return config_get_next_param(option, nullptr);
 }
 
 /* Note on gcc_pure: Some of the functions declared pure are not

src/PlaylistPlugin.hxx

@@ -23,8 +23,6 @@
 #include "thread/Mutex.hxx"
 #include "thread/Cond.hxx"
 
-#include <stddef.h>
-
 struct config_param;
 struct input_stream;
 struct Tag;
@@ -50,7 +48,7 @@ struct playlist_plugin {
 	/**
 	 * Initialize the plugin.  Optional method.
 	 *
-	 * @param param a configuration block for this plugin, or NULL
+	 * @param param a configuration block for this plugin, or nullptr
 	 * if none is configured
 	 * @return true if the plugin was initialized successfully,
 	 * false if the plugin is not available
@@ -89,7 +87,7 @@ struct playlist_plugin {
 /**
  * Initialize a plugin.
  *
- * @param param a configuration block for this plugin, or NULL if none
+ * @param param a configuration block for this plugin, or nullptr if none
  * is configured
  * @return true if the plugin was initialized successfully, false if
  * the plugin is not available
@@ -98,7 +96,7 @@ static inline bool
 playlist_plugin_init(const struct playlist_plugin *plugin,
 		     const config_param &param)
 {
-	return plugin->init != NULL
+	return plugin->init != nullptr
 		? plugin->init(param)
 		: true;
 }
@@ -109,7 +107,7 @@ playlist_plugin_init(const struct playlist_plugin *plugin,
 static inline void
 playlist_plugin_finish(const struct playlist_plugin *plugin)
 {
-	if (plugin->finish != NULL)
+	if (plugin->finish != nullptr)
 		plugin->finish();
 }