[gnumeric] Plug leak.

[Morten Welinder <mortenw src gnome org>]

commit b3a2ef31d20bc4af5aa7c641d41bd9aed7472734
Author: Morten Welinder <terra gnome org>
Date:   Wed Nov 29 13:05:51 2017 -0500

    Plug leak.

 src/libgnumeric.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)
---
diff --git a/src/libgnumeric.c b/src/libgnumeric.c
index aecf84e..2d1a17e 100644
--- a/src/libgnumeric.c
+++ b/src/libgnumeric.c
@@ -351,6 +351,8 @@ gnm_dump_func_defs (char const* filename, int dump_type)
        if ((retval = gnm_cmd_context_stderr_get_status (GNM_CMD_CONTEXT_STDERR (cc))) == 0)
                function_dump_defs (filename, dump_type);
 
+       g_object_unref (cc);
+
        return retval;
 }