Fixed additional typos in comments and log messages.

src/libhydra/plugins/attr_sql/sql_attribute.c

@@ -38,7 +38,7 @@ struct private_sql_attribute_t {
 	database_t *db;
 
 	/**
-	 * wheter to record lease history in lease table
+	 * whether to record lease history in lease table
 	 */
 	bool history;
 };

src/libhydra/plugins/resolve/resolve_plugin.c

@@ -31,7 +31,7 @@ struct private_resolve_plugin_t {
 	resolve_plugin_t public;
 
 	/**
-	 * The registerd DNS attribute handler
+	 * The registered DNS attribute handler
 	 */
 	resolve_handler_t *handler;
 };