fonts: Fix typo in async ListFonts logic

This was introduced in 3ab6cd31cb.  Mea
culpa.  This logic is still incorrect [1], but at least it's less
incorrect.

[1] - https://bugzilla.redhat.com/658587

Reviewed-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Daniel Stone <daniel@fooishbar.org>
Signed-off-by: Adam Jackson <ajax@redhat.com>

dix/dixfonts.c

@@ -667,7 +667,7 @@ doListFontsAndAliases(ClientPtr client, LFclosurePtr c)
 		    ((pointer) c->client, fpe, &name, &namelen, &tmpname,
 		     &resolvedlen, c->current.private);
 		if (err == Suspended) {
-		    if (ClientIsAsleep(client))
+		    if (!ClientIsAsleep(client))
 			ClientSleep(client,
 				    (ClientSleepProcPtr)doListFontsAndAliases,
 				    c);