[evolution-ews] Err, overlooked test, David notified me about it

[Milan Crha <mcrha src gnome org>]

commit 24445771f4cfca83c6d496cf4766df0359c15215
Author: Milan Crha <mcrha redhat com>
Date:   Thu Oct 20 14:01:38 2011 +0200

    Err, overlooked test, David notified me about it

 src/camel/camel-ews-summary.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/src/camel/camel-ews-summary.c b/src/camel/camel-ews-summary.c
index 180e8fc..9f3016e 100644
--- a/src/camel/camel-ews-summary.c
+++ b/src/camel/camel-ews-summary.c
@@ -161,7 +161,7 @@ summary_header_from_db (CamelFolderSummary *s, CamelFIRecord *mir)
 	CamelEwsSummary *gms = CAMEL_EWS_SUMMARY (s);
 	gchar *part;
 
-	if (CAMEL_FOLDER_SUMMARY_CLASS (camel_ews_summary_parent_class)->summary_header_from_db (s, mir) == -1)
+	if (!CAMEL_FOLDER_SUMMARY_CLASS (camel_ews_summary_parent_class)->summary_header_from_db (s, mir))
 		return FALSE;
 
 	part = mir->bdata;