unset: don't return a result with -nocomplain

unset -nocomplain abc(missing)

was still returning an error message, but as
a normal return. It should return an empty result.

Signed-off-by: Steve Bennett <steveb@workware.net.au>

1 files changed, 2 insertions, 0 deletions

diff --git a/jim.c b/jim.c
index 554d162..893dff9 100644
--- a/jim.c
+++ b/jim.c
@@ -12084,6 +12084,8 @@ static int Jim_UnsetCoreCommand(Jim_Interp *interp, int argc, Jim_Obj *const *ar
         }
         i++;
     }
+
+    Jim_SetEmptyResult(interp);
     return JIM_OK;
 }