[dia] Unregister vdx, xfig import filters during plugin unloading.

[Hans Breuer <hans src gnome org>]

commit 79c3d5c775759d5c868c1ecd31f4fd7ffadff7c1
Author: Jiri Popelka <jpopelka redhat com>
Date:   Wed Sep 5 11:12:59 2012 +0200

    Unregister vdx, xfig import filters during plugin unloading.
    
    Signed-off-by: Hans Breuer <hans breuer org>

 plug-ins/vdx/vdx.c   |    1 +
 plug-ins/xfig/xfig.c |    1 +
 2 files changed, 2 insertions(+), 0 deletions(-)
---
diff --git a/plug-ins/vdx/vdx.c b/plug-ins/vdx/vdx.c
index 64bc4b0..82ddc4b 100644
--- a/plug-ins/vdx/vdx.c
+++ b/plug-ins/vdx/vdx.c
@@ -43,6 +43,7 @@ static void
 _plugin_unload (PluginInfo *info)
 {
     filter_unregister_export(&vdx_export_filter);
+    filter_unregister_import(&vdx_import_filter);
 }
 
 
diff --git a/plug-ins/xfig/xfig.c b/plug-ins/xfig/xfig.c
index 966c294..10d68aa 100644
--- a/plug-ins/xfig/xfig.c
+++ b/plug-ins/xfig/xfig.c
@@ -41,6 +41,7 @@ static void
 _plugin_unload (PluginInfo *info)
 {
     filter_unregister_export(&xfig_export_filter);
+    filter_unregister_import(&xfig_import_filter);
 }