misc: Add explicit overrides and fix other clang >= 3.5 issues

This patch adds explicit overrides as this is now required when using
"-Wall" with clang >= 3.5, the latter now part of the most recent
XCode. The patch consequently removes "virtual" for those methods
where "override" is added. The latter should be enough of an
indication.

As part of this patch, a few minor issues that clang >= 3.5 complains
about are also resolved (unused methods and variables).

1 files changed, 4 insertions, 4 deletions

diff --git a/src/dev/ide_ctrl.hh b/src/dev/ide_ctrl.hh
index 398cab299..0afa60e4a 100644
--- a/src/dev/ide_ctrl.hh
+++ b/src/dev/ide_ctrl.hh
@@ -146,13 +146,13 @@ class IdeController : public PciDevice
 
     void intrPost();
 
-    Tick writeConfig(PacketPtr pkt);
-    Tick readConfig(PacketPtr pkt);
+    Tick writeConfig(PacketPtr pkt) override;
+    Tick readConfig(PacketPtr pkt) override;
 
     void setDmaComplete(IdeDisk *disk);
 
-    Tick read(PacketPtr pkt);
-    Tick write(PacketPtr pkt);
+    Tick read(PacketPtr pkt) override;
+    Tick write(PacketPtr pkt) override;
 
     void serialize(CheckpointOut &cp) const override;
     void unserialize(CheckpointIn &cp) override;