[libgxps] Fix assertion that fails when building the outline for some documents

[Carlos Garcia Campos <carlosgc src gnome org>]

commit 562902f96499d4ad59f69c966e4d0feef3289420
Author: Carlos Garcia Campos <carlosgc gnome org>
Date:   Sun Sep 5 20:24:52 2010 +0200

    Fix assertion that fails when building the outline for some documents

 libgxps/gxps-document-structure.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/libgxps/gxps-document-structure.c b/libgxps/gxps-document-structure.c
index 5de7c70..b977b31 100644
--- a/libgxps/gxps-document-structure.c
+++ b/libgxps/gxps-document-structure.c
@@ -230,7 +230,7 @@ outline_start_element (GMarkupParseContext  *context,
 					break;
 				}
 			}
-			g_assert (level > 1 && node->parent != NULL);
+			g_assert (level == 1 || (level > 1 && node->parent != NULL));
 		} else if (ctx->level == level) {
 			/* Same level, parent must be the same as the previous node */
 			node->parent = (ctx->prevs) ? ((OutlineNode *)ctx->prevs->data)->parent : NULL;