target: Remove break/watchpoints in target_destroy()

Break- and watchpoints are not removed when a target is destroyed
which introduces a memory leak.

Change-Id: I6143d48f7efd765b7752a12fdc337da3496d896f
Signed-off-by: Marc Schink <[email protected]>
Reviewed-on: https://review.openocd.org/c/openocd/+/7956
Reviewed-by: Marek Vrbka <[email protected]>
Reviewed-by: Tomas Vanek <[email protected]>
Tested-by: jenkins
Reviewed-by: Antonio Borneo <[email protected]>

src/target/target.c

@@ -2212,6 +2212,9 @@ uint32_t target_get_working_area_avail(struct target *target)
 
 static void target_destroy(struct target *target)
 {
+	breakpoint_remove_all(target);
+	watchpoint_remove_all(target);
+
 	if (target->type->deinit_target)
 		target->type->deinit_target(target);