Index: generic/nsf.c
===================================================================
diff -u -rbef777ff411770b97736e35a87cb23e23c7d7f83 -r5a560516f8b0b4388f892150b70e783e1d238310
--- generic/nsf.c	(.../nsf.c)	(revision bef777ff411770b97736e35a87cb23e23c7d7f83)
+++ generic/nsf.c	(.../nsf.c)	(revision 5a560516f8b0b4388f892150b70e783e1d238310)
@@ -12536,7 +12536,6 @@
   switch (level) {
   case CALLING_LEVEL: NsfCallStackFindLastInvocation(interp, 1, &framePtr); break;
   case ACTIVE_LEVEL:  NsfCallStackFindActiveFrame(interp,    1, &framePtr); break;
-  default: framePtr = NULL;
   }
 
   if (framePtr) {
@@ -12546,7 +12545,6 @@
 
     buffer[0] = '#';
     Nsf_ltoa(buffer+1, (long)Tcl_CallFrame_level(framePtr), &l);
-    /*fprintf(stderr, "*** framePtr=%p buffer %s\n", framePtr, buffer);*/
     resultObj = Tcl_NewStringObj(buffer, l+1);
   } else {
     /* If not called from an nsf frame, return 1 as default */