fixed some compiler warnings

src/charon/bus/listeners/file_logger.c

@@ -106,7 +106,6 @@ static void destroy(private_file_logger_t *this)
  */
 file_logger_t *file_logger_create(FILE *out)
 {
-	debug_t group;
 	private_file_logger_t *this = malloc_thing(private_file_logger_t);
 	
 	/* public functions */

src/charon/config/traffic_selector.c

@@ -612,6 +612,11 @@ static void to_subnet(private_traffic_selector_t *this, host_t **net, u_int8_t *
 			net_chunk.len = sizeof(this->from6);
 			break;
 		}
+		default:
+		{
+			/* unreachable */
+			return;
+		}
 	}
 	
 	net_chunk.ptr = malloc(net_chunk.len);

src/charon/plugins/stroke/stroke_config.c

@@ -19,6 +19,7 @@
 
 #include <daemon.h>
 #include <utils/mutex.h>
+#include <utils/lexparser.h>
 
 typedef struct private_stroke_config_t private_stroke_config_t;
 

src/charon/plugins/updown/updown_plugin.c

@@ -15,6 +15,9 @@
  * $Id$
  */
 
+#define _GNU_SOURCE
+#include <stdio.h>
+
 #include "updown_plugin.h"
 
 #include <daemon.h>

src/charon/sa/task_manager.c

@@ -145,8 +145,6 @@ struct private_task_manager_t {
  */
 static void flush(private_task_manager_t *this)
 {
-	task_t *task;
-	
 	this->queued_tasks->destroy_offset(this->queued_tasks, 
 										offsetof(task_t, destroy));
 	this->passive_tasks->destroy_offset(this->passive_tasks,