--- xnu/xnu-4903.231.4/libkern/c++/OSCollection.cpp
+++ xnu/xnu-792.21.3/libkern/c++/OSCollection.cpp
@@ -60,17 +60,9 @@
 
 void OSCollection::haveUpdated()
 {
-    if (fOptions & kImmutable)
-    {
-	if (!(gIOKitDebug & kOSRegistryModsMode))
-	{
-	    panic("Trying to change a collection in the registry");
-	}
-	else
-	{
-	    OSReportWithBacktrace("Trying to change a collection in the registry");
-	}
-    }
+    if ( (gIOKitDebug & kOSLogRegistryMods) && (fOptions & kImmutable) )
+	OSReportWithBacktrace("Trying to change a collection in the registry");
+
     updateStamp++;
 }
 
@@ -102,37 +94,3 @@
 	return this;
     }
 }
-
-bool OSCollection::iterateObjects(void * refcon, bool (*callback)(void * refcon, OSObject * object))
-{
-    uint64_t     iteratorStore[2];
-    unsigned int initialUpdateStamp;
-    bool         done;
-
-    assert(iteratorSize() < sizeof(iteratorStore));
-
-    if (!initIterator(&iteratorStore[0])) return (false);
-
-    initialUpdateStamp = updateStamp;
-    done = false;
-    do
-    {
-        OSObject * object;
-        if (!getNextObjectForIterator(&iteratorStore[0], &object)) break;
-        done = callback(refcon, object);
-    }
-    while (!done && (initialUpdateStamp == updateStamp));
-
-    return initialUpdateStamp == updateStamp;
-}
-
-static bool OSCollectionIterateObjectsBlock(void * refcon, OSObject * object)
-{
-    bool (^block)(OSObject * object) = (typeof(block)) refcon;
-    return (block(object));
-}
-
-bool OSCollection::iterateObjects(bool (^block)(OSObject * object))
-{
-    return (iterateObjects((void *) block, OSCollectionIterateObjectsBlock));
-}