[gthumb] do not add a entry point if already present

[Paolo Bacchilega <paobac src gnome org>]

commit 3a0a1a91030c2f6ea4eaf5db8702285e029b2d07
Author: Paolo Bacchilega <paobac src gnome org>
Date:   Mon Feb 21 21:10:54 2011 +0100

    do not add a entry point if already present
    
    [bug #627153]

 gthumb/gth-file-source-vfs.c |    6 ++++++
 1 files changed, 6 insertions(+), 0 deletions(-)
---
diff --git a/gthumb/gth-file-source-vfs.c b/gthumb/gth-file-source-vfs.c
index 188b99e..e7fc7f3 100644
--- a/gthumb/gth-file-source-vfs.c
+++ b/gthumb/gth-file-source-vfs.c
@@ -102,6 +102,12 @@ gth_file_source_vfs_get_entry_points (GthFileSource *file_source)
 			continue;
 
 		file = g_mount_get_root (mount);
+
+		if (gth_file_data_list_find_file (list, file) != NULL) {
+			g_object_unref (file);
+			continue;
+		}
+
 		info = g_file_query_info (file, GFILE_BASIC_ATTRIBUTES ",access::*", G_FILE_QUERY_INFO_NONE, NULL, NULL);
 
 		icon = g_mount_get_icon (mount);