Make target_waitstatus_to_string return an std::string

A quite straightforward change.  It does "fix" leaks in record-btrace.c,
although since this is only used in debug printing code, it has no real
world impact.

gdb/ChangeLog:

	* target/waitstatus.h (target_waitstatus_to_string): Change
	return type to std::string.
	* target/waitstatus.c (target_waitstatus_to_string): Return
	std::string.
	* target.h (target_waitstatus_to_string): Remove declaration.
	* infrun.c (resume, clear_proceed_status_thread,
	print_target_wait_results, do_target_wait, save_waitstatus,
	stop_all_threads): Adjust.
	* record-btrace.c (record_btrace_wait): Adjust.
	* target-debug.h
	(target_debug_print_struct_target_waitstatus_p): Adjust.

gdb/gdbserver/ChangeLog:

	* linux-low.c (linux_wait_1): Adjust.
	* server.c (queue_stop_reply_callback): Adjust.

1 files changed, 0 insertions, 4 deletions

diff --git a/gdb/target.h b/gdb/target.h
index c0155c1..5971151 100644
--- a/gdb/target.h
+++ b/gdb/target.h
@@ -108,10 +108,6 @@ struct syscall
     const char *name;
   };
 
-/* Return a pretty printed form of target_waitstatus.
-   Space for the result is malloc'd, caller must free.  */
-extern char *target_waitstatus_to_string (const struct target_waitstatus *);
-
 /* Return a pretty printed form of TARGET_OPTIONS.
    Space for the result is malloc'd, caller must free.  */
 extern char *target_options_to_string (int target_options);