[16828b3744] [vwait] *must* successfully undo its variable trace, or else

it risks corrupting memory.  Namespace teardown complexities were giving
the traces an opportunity to survive.  Added another (arguably better)
Tcl_UntraceVar() call to be sure we avoid this problem.

1 files changed, 2 insertions, 0 deletions

diff --git a/generic/tclEvent.c b/generic/tclEvent.c
index c664b38..4db524c 100644
--- a/generic/tclEvent.c
+++ b/generic/tclEvent.c
@@ -1379,6 +1379,8 @@ VwaitVarProc(
     int *donePtr = (int *) clientData;
 
     *donePtr = 1;
+    Tcl_UntraceVar(interp, name1, TCL_TRACE_WRITES|TCL_TRACE_UNSETS,
+	    VwaitVarProc, clientData);
     return NULL;
 }