kill volatile struct gdb_exception

After the previous patch, this is the last remaining use of a volatile
struct gdb_exception.  Kill it, as it's troublesome for C++: we can't
assign volatile <-> non-volatile without copy constructors /
assignment operators that do that, which I'd rather avoid.

gdb/ChangeLog:
2015-03-07  Pedro Alves  <palves@redhat.com>

	* main.c (handle_command_errors): Remove volatile qualifier from
	parameter.

2 files changed, 6 insertions, 1 deletions

diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index a18830f..8f5029a 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,5 +1,10 @@
 2015-03-07  Pedro Alves  <palves@redhat.com>
 
+	* main.c (handle_command_errors): Remove volatile qualifier from
+	parameter.
+
+2015-03-07  Pedro Alves  <palves@redhat.com>
+
 	* breakpoint.c (save_breakpoints): Adjust to avoid code between
 	TRY and CATCH.
 	* gdbtypes.c (safe_parse_type): Remove empty line.
diff --git a/gdb/main.c b/gdb/main.c
index ceca807..72b8714 100644
--- a/gdb/main.c
+++ b/gdb/main.c
@@ -339,7 +339,7 @@ captured_command_loop (void *data)
    catch_command_errors/catch_command_errors_const.  */
 
 static int
-handle_command_errors (volatile struct gdb_exception e)
+handle_command_errors (struct gdb_exception e)
 {
   if (e.reason < 0)
     {