From 934656f6e8681de4ac6385018260e62313106884 Mon Sep 17 00:00:00 2001
From: Holger Vogt <holger.vogt@uni-due.de>
Date: Tue, 7 Aug 2018 20:42:55 +0200
Subject: [PATCH] fix memory leak: before killing a plot, remove its hash table
 entry

---
 src/frontend/postcoms.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/frontend/postcoms.c b/src/frontend/postcoms.c
index d24c2ca28..83fc5cdf3 100644
--- a/src/frontend/postcoms.c
+++ b/src/frontend/postcoms.c
@@ -863,6 +863,9 @@ killplot(struct plot *pl)
         if (pl == plot_cur)
             plot_cur = op;
     }
+    /* delete the hash table entry for this plot */
+    if (pl->pl_lookup_table)
+        nghash_free(pl->pl_lookup_table, NULL, NULL);
     tfree(pl->pl_title);
     tfree(pl->pl_name);
     tfree(pl->pl_typename);