dix: partially revert 8399c4e263

Turns out that glx does need this one.

Assuming no external modules need this,
it should be fine to keep this in a private header.

Signed-off-by: stefan11111 <stefan11111@shitposting.expert>

dix/callback_priv.h

@@ -10,6 +10,20 @@
 void InitCallbackManager(void);
 void DeleteCallbackManager(void);
 
+typedef struct _CallbackRec {
+    CallbackProcPtr proc;
+    void *data;
+    Bool deleted;
+    struct _CallbackRec *next;
+} CallbackRec, *CallbackPtr;
+
+typedef struct _CallbackList {
+    int inCallback;
+    Bool deleted;
+    int numDeleted;
+    CallbackPtr list;
+} CallbackListRec;
+
 /*
  * @brief delete a callback list
  *

dix/dixutils.c

@@ -652,20 +652,6 @@ ClientIsAsleep(ClientPtr client)
 
 /* ===== Private Procedures ===== */
 
-typedef struct _CallbackRec {
-    CallbackProcPtr proc;
-    void *data;
-    Bool deleted;
-    struct _CallbackRec *next;
-} CallbackRec, *CallbackPtr;
-
-typedef struct _CallbackList {
-    int inCallback;
-    Bool deleted;
-    int numDeleted;
-    CallbackPtr list;
-} CallbackListRec;
-
 static size_t numCallbackListsToCleanup = 0;
 static CallbackListPtr **listsToCleanup = NULL;