[file-roller] Fix memory leak in fr_window_change_action_state

[Paolo Bacchilega <paobac src gnome org>]

commit 2b131a1c81417158ebf4afd5bbd0bc3aa441be85
Author: David King <dking redhat com>
Date:   Thu Jul 16 10:45:41 2015 +0100

    Fix memory leak in fr_window_change_action_state
    
    Found with Valgrind:
    
    ==9376== 81 (40 direct, 41 indirect) bytes in 1 blocks are definitely
    lost in loss record 12,551 of 17,916
    ==9376==    at 0x4C2BC50: malloc (in
    /usr/lib64/valgrind/vgpreload_memcheck-amd64-linux.so)
    ==9376==    by 0x748B689: g_malloc (gmem.c:97)
    ==9376==    by 0x74A24D2: g_slice_alloc (gslice.c:1007)
    ==9376==    by 0x74C022C: g_variant_alloc (gvariant-core.c:476)
    ==9376==    by 0x74C022C: g_variant_new_from_bytes (gvariant-core.c:512)
    ==9376==    by 0x74B9766: g_variant_new_from_trusted (gvariant.c:295)
    ==9376==    by 0x74B97DE: g_variant_new_boolean (gvariant.c:316)
    ==9376==    by 0x43CACD: fr_window_change_action_state.constprop.63
    (fr-window.c:724)
    ==9376==    by 0x43CC96: fr_window_deactivate_filter (fr-window.c:1712)
    ==9376==    by 0x43CC96: fr_window_update_current_location
    (fr-window.c:1738)
    ==9376==    by 0x441583: fr_window_construct (fr-window.c:5748)
    ==9376==    by 0x441583: fr_window_new (fr-window.c:5796)
    ==9376==    by 0x41C490: fr_application_command_line
    (fr-application.c:588)
    ==9376==    by 0xC750D2F: ffi_call_unix64 (in
    /usr/lib64/libffi.so.6.0.2)
    ==9376==    by 0xC75079A: ffi_call (in /usr/lib64/libffi.so.6.0.2)
    ==9376==    by 0x71FAB94: g_cclosure_marshal_generic_va
    (gclosure.c:1594)
    ==9376==    by 0x71FA0C3: _g_closure_invoke_va (gclosure.c:864)
    ==9376==    by 0x7213DD8: g_signal_emit_valist (gsignal.c:3246)
    ==9376==    by 0x72148F1: g_signal_emit (gsignal.c:3393)
    ==9376==    by 0x6F0CF82: g_application_call_command_line
    (gapplication.c:953)
    ==9376==    by 0x6F0F55F: g_application_run (gapplication.c:2292)
    ==9376==    by 0x414FE5: main (main.c:38)
    
    https://bugzilla.gnome.org/show_bug.cgi?id=752476

 src/fr-window.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)
---
diff --git a/src/fr-window.c b/src/fr-window.c
index a0b7377..087d0af 100644
--- a/src/fr-window.c
+++ b/src/fr-window.c
@@ -709,6 +709,8 @@ fr_window_change_action_state (FrWindow   *window,
        new_state = g_variant_new_boolean (value);
        if ((old_state == NULL) || ! g_variant_equal (old_state, new_state))
                g_action_change_state (action, new_state);
+       else
+               g_variant_unref (new_state);
 
        if (old_state != NULL)
                g_variant_unref (old_state);