[f-spot] Don't BeginTransaction if it shouldn't and won't be committed

[Ruben Vermeersch <rubenv src gnome org>]

commit c69c0442adbb4ae91a38dbc652ea4a5841956797
Author: Paul Wellner Bou <paul purecodes org>
Date:   Wed Jul 28 14:30:38 2010 +0200

    Don't BeginTransaction if it shouldn't and won't be committed
    
    https://bugzilla.gnome.org/show_bug.cgi?id=625336

 src/TagStore.cs |   11 +++++++----
 1 files changed, 7 insertions(+), 4 deletions(-)
---
diff --git a/src/TagStore.cs b/src/TagStore.cs
index c6325ff..84c9f4d 100644
--- a/src/TagStore.cs
+++ b/src/TagStore.cs
@@ -358,10 +358,13 @@ public class TagStore : DbStore<Tag> {
 
 		// FIXME: this hack is used, because HyenaSqliteConnection does not support
 		// the InTransaction propery
-		try {
-			Database.BeginTransaction ();
-		} catch {
-			use_transactions = false;
+
+		if (use_transactions) {
+			try {
+				Database.BeginTransaction ();
+			} catch {
+				use_transactions = false;
+			}
 		}
 
 		foreach (Tag tag in tags) {