prevent the "load" command from repeating

This makes sure that the `load' command does not repeat when the user
presses Return again, as documented in the GDB User's Manual.

gdb/ChangeLog:

        * symfile.c (find_sym_fns): Add call to dont_repeat.

gdb/ChangeLog

@@ -1,3 +1,7 @@
+2011-01-03  Joel Brobecker  <brobecker@adacore.com>
+
+	* symfile.c (find_sym_fns): Add call to dont_repeat.
+
 2011-01-01  Joel Brobecker  <brobecker@adacore.com>
 
 	Copyright year update in most files (performed by copyright.sh).

gdb/symfile.c

@@ -1742,6 +1742,8 @@ find_sym_fns (bfd *abfd)
 static void
 load_command (char *arg, int from_tty)
 {
+  dont_repeat ();
+
   /* The user might be reloading because the binary has changed.  Take
      this opportunity to check.  */
   reopen_exec_file ();