diff options
| -rw-r--r-- | generic/tclEnv.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/generic/tclEnv.c b/generic/tclEnv.c index 7c49d44..8f51c1b 100644 --- a/generic/tclEnv.c +++ b/generic/tclEnv.c @@ -614,6 +614,7 @@ EnvTraceProc( const char *value = TclGetEnv(name2, &valueString); if (value == NULL) { + Tcl_UnsetVar2(interp, name1, name2, 0); return NULL; } Tcl_SetVar2(interp, name1, name2, value, 0); |