Use internal temp variable for swap macros

Also, fix whitespace, mainly around
	swaps(&rep.sequenceNumber)

Reviewed-by: Peter Harris <pharris@opentext.com>
Signed-off-by: Matt Turner <mattst88@gmail.com>

xfixes/select.c

@@ -220,13 +220,12 @@ ProcXFixesSelectSelectionInput (ClientPtr client)
 int
 SProcXFixesSelectSelectionInput (ClientPtr client)
 {
-    register int n;
     REQUEST(xXFixesSelectSelectionInputReq);
 
-    swaps(&stuff->length, n);
-    swapl(&stuff->window, n);
-    swapl(&stuff->selection, n);
-    swapl(&stuff->eventMask, n);
+    swaps(&stuff->length);
+    swapl(&stuff->window);
+    swapl(&stuff->selection);
+    swapl(&stuff->eventMask);
     return (*ProcXFixesVector[stuff->xfixesReqType])(client);
 }