dix: write out X_GetPointerMapping reply directly

No need for using a complex callback machinery, if we just move the
little pieces of byte-swapping directly into the request handler.

Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>

dix/devices.c

@@ -1996,7 +1996,6 @@ ProcGetKeyboardMapping(ClientPtr client)
 int
 ProcGetPointerMapping(ClientPtr client)
 {
-    xGetPointerMappingReply rep;
 
     /* Apps may get different values each time they call GetPointerMapping as
      * the ClientPointer could change. */
@@ -2012,14 +2011,20 @@ ProcGetPointerMapping(ClientPtr client)
         return rc;
 
     nElts = (butc) ? butc->numButtons : 0;
-    rep = (xGetPointerMappingReply) {
+
+    xGetPointerMappingReply rep = {
         .type = X_Reply,
         .nElts = nElts,
         .sequenceNumber = client->sequence,
         .length = ((unsigned) nElts + (4 - 1)) / 4
     };
-    WriteReplyToClient(client, sizeof(xGetPointerMappingReply), &rep);
-    if (butc)
+
+    if (client->swapped) {
+        swaps(&rep.sequenceNumber);
+        swapl(&rep.length);
+    }
+
+    WriteToClient(client, sizeof(rep), &rep);
     WriteToClient(client, nElts, &butc->map[1]);
     return Success;
 }

dix/swaprep.c

@@ -544,15 +544,6 @@ SGetKeyboardMappingReply(ClientPtr pClient, int size,
     WriteToClient(pClient, size, pRep);
 }
 
-void _X_COLD
-SGetPointerMappingReply(ClientPtr pClient, int size,
-                        xGetPointerMappingReply * pRep)
-{
-    swaps(&pRep->sequenceNumber);
-    swapl(&pRep->length);
-    WriteToClient(pClient, size, pRep);
-}
-
 void _X_COLD
 SGetKeyboardControlReply(ClientPtr pClient, int size,
                          xGetKeyboardControlReply * pRep)

dix/tables.c

@@ -832,7 +832,7 @@ ReplySwapPtr ReplySwapVector[256] = {
     ReplyNotSwappd,
     ReplyNotSwappd,                             /* 115 */
     ReplyNotSwappd,
-    (ReplySwapPtr) SGetPointerMappingReply,
+    ReplyNotSwappd,
     ReplyNotSwappd,
     ReplyNotSwappd,                             /* 119 */
     ReplyNotSwappd,                             /* 120 */

include/swaprep.h

@@ -159,11 +159,6 @@ extern void SGetKeyboardMappingReply(ClientPtr /* pClient */ ,
                                      xGetKeyboardMappingReply *
                                      /* pRep */ );
 
-extern void SGetPointerMappingReply(ClientPtr /* pClient */ ,
-                                    int /* size */ ,
-                                    xGetPointerMappingReply *
-                                    /* pRep */ );
-
 extern void SGetKeyboardControlReply(ClientPtr /* pClient */ ,
                                      int /* size */ ,
                                      xGetKeyboardControlReply *