Add missing cleanup in exec_file_locate_attach

exec_file_locate_attach allocates memory for full_exec_path (using
either exec_file_find, source_full_path_of or xstrdup) but this
memory is never freed.  This commit adds the necessary cleanup.

gdb/ChangeLog:

	* exec.c (exec_file_locate_attach): Add missing cleanup.

1 files changed, 5 insertions, 0 deletions

diff --git a/gdb/exec.c b/gdb/exec.c
index 23c89c2..0b8c077 100644
--- a/gdb/exec.c
+++ b/gdb/exec.c
@@ -141,6 +141,7 @@ void
 exec_file_locate_attach (int pid, int from_tty)
 {
   char *exec_file, *full_exec_path = NULL;
+  struct cleanup *old_chain;
 
   /* Do nothing if we already have an executable filename.  */
   exec_file = (char *) get_exec_file (0);
@@ -170,8 +171,12 @@ exec_file_locate_attach (int pid, int from_tty)
 	full_exec_path = xstrdup (exec_file);
     }
 
+  old_chain = make_cleanup (xfree, full_exec_path);
+
   exec_file_attach (full_exec_path, from_tty);
   symbol_file_add_main (full_exec_path, from_tty);
+
+  do_cleanups (old_chain);
 }
 
 /* Set FILENAME as the new exec file.