Fixed VC++ compiling errors.

src/game/intro.cpp

@@ -130,7 +130,7 @@ local void IntroCallbackKey1(unsigned key __attribute__((unused)),
 **	Callback for input.
 */
 local void IntroCallbackKey2(unsigned key,
-	unsigned keychar __attribute((unused)))
+	unsigned keychar __attribute__((unused)))
 {
     if( UseContinueButton ) {
 	if( (key =='c' || key =='\r') &&

src/sound/mad.cpp

@@ -170,7 +170,7 @@ local enum mad_flow MAD_write(void *user,
 */
 local enum mad_flow MAD_error(void *user __attribute__((unused)),
     struct mad_stream *stream,
-    struct mad_frame *frame __attribute((unused)))
+    struct mad_frame *frame __attribute__((unused)))
 {
     fprintf(stderr, "decoding error 0x%04x (%s)\n",
 	stream->error, mad_stream_errorstr(stream));

src/ui/botpanel.cpp

@@ -220,7 +220,7 @@ global void SaveButtons(FILE* file)
 	}
 	fprintf(file,"  'key \"");
 	switch( UnitButtonTable[i]->Key ) {
-	    case '\e':
+	    case '\033':
 		fprintf(file,"\\%03o",UnitButtonTable[i]->Key);
 		break;
 	    default:

src/ui/interface.cpp

@@ -878,7 +878,7 @@ local int InputKey(int key)
 	    }
 	    NetworkChatMessage(Input);
 
-	case '\e':
+	case '\033':
 	    ClearStatusLine();
 	    KeyState = KeyStateCommand;
 	    return 1;

src/ui/menus.cpp

@@ -3081,7 +3081,7 @@ local void ScenSelectHSCdVolumeAction(Menuitem *mi, int i)
 }
 #else
 local void ScenSelectHSCdVolumeAction(Menuitem *mi __attribute__((unused)),
-	int i __attribute((unused)))
+	int i __attribute__((unused)))
 {
 }
 #endif