[brasero] Do not crash when the mime type of an URI can't be identified.

[Philippe Rouquier <philippr src gnome org>]

commit cdf71fe1f1be747bec01ba84a1ce649addab0b33
Author: Philippe Rouquier <bonfire-app wanadoo fr>
Date:   Mon Aug 3 14:22:51 2009 +0200

    Do not crash when the mime type of an URI can't be identified.

 src/brasero-project-manager.c |    5 +++++
 1 files changed, 5 insertions(+), 0 deletions(-)
---
diff --git a/src/brasero-project-manager.c b/src/brasero-project-manager.c
index 2680b4c..17fabb4 100644
--- a/src/brasero-project-manager.c
+++ b/src/brasero-project-manager.c
@@ -785,6 +785,11 @@ brasero_project_manager_open_by_mime (BraseroProjectManager *manager,
 				      const gchar *uri,
 				      const gchar *mime)
 {
+	if (!mime) {
+		/* that can happen when the URI could not be identified */
+		return BRASERO_PROJECT_TYPE_INVALID;
+	}
+
 	/* When our files/description of x-brasero mime type is not properly 
 	 * installed, it's returned as application/xml, so check that too. */
 	if (!strcmp (mime, "application/x-brasero")