Fix reference counting of stack trace in 'error'

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

1 files changed, 1 insertions, 0 deletions

diff --git a/jim.c b/jim.c
index 434b9e5..a23e229 100644
--- a/jim.c
+++ b/jim.c
@@ -4911,6 +4911,7 @@ static void JimAppendStackTrace(Jim_Interp *interp, const char *procname,
     }
 
     if (Jim_IsShared(interp->stackTrace)) {
+        Jim_DecrRefCount(interp, interp->stackTrace);
         interp->stackTrace = Jim_DuplicateObj(interp, interp->stackTrace);
         Jim_IncrRefCount(interp->stackTrace);
     }