[gjs] value: Fix memory leak while marshalling GValue

[Philip Chimento <pchimento src gnome org>]

commit 61b1d8d2f601486954fa4141e3bde47b68ea106d
Author: Philip Chimento <philip endlessm com>
Date:   Wed Aug 30 13:39:39 2017 -0700

    value: Fix memory leak while marshalling GValue
    
    g_value_set_boxed() copies the GValue, so if the GValue is holding a
    value that must be freed, e.g. a string, it needs to be unset.
    (g_value_take_boxed() will not work since the GValue that it would take
    ownership of is stack-allocated.)
    
    https://bugzilla.gnome.org/show_bug.cgi?id=786995

 gi/value.cpp |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/gi/value.cpp b/gi/value.cpp
index c718828..bf2ed75 100644
--- a/gi/value.cpp
+++ b/gi/value.cpp
@@ -535,6 +535,7 @@ gjs_value_to_g_value_internal(JSContext      *context,
                 return false;
 
             g_value_set_boxed(gvalue, &nested_gvalue);
+            g_value_unset(&nested_gvalue);
             return true;
         }