Index: generic/nsfObj.c
===================================================================
diff -u -r2ba521e3dfbb1294908b51ed8e13dab5adc3ca03 -re639a46f30e0e0c10dc84c898e828b9abe9298d9
--- generic/nsfObj.c	(.../nsfObj.c)	(revision 2ba521e3dfbb1294908b51ed8e13dab5adc3ca03)
+++ generic/nsfObj.c	(.../nsfObj.c)	(revision e639a46f30e0e0c10dc84c898e828b9abe9298d9)
@@ -93,7 +93,7 @@
    * Free or reuse the old interal representation and store own
    * structure as internal representation.
    */
-  if (objPtr->typePtr != &NsfFlagObjType) {
+  if (likely(objPtr->typePtr != &NsfFlagObjType)) {
     TclFreeIntRep(objPtr);
     flagPtr = NEW(NsfFlag);
     objPtr->internalRep.twoPtrValue.ptr1 = (void *)flagPtr;