Fixing characteristic read by UUID

When the characteristic to be read was the last one of a given range, it
was not being listed.
diff --git a/src/attrib-server.c b/src/attrib-server.c
index 2e95628..7ee496e 100644
--- a/src/attrib-server.c
+++ b/src/attrib-server.c
@@ -431,7 +431,7 @@
 		if (a->handle < start)
 			continue;
 
-		if (a->handle >= end)
+		if (a->handle > end)
 			break;
 
 		if (bt_uuid_cmp(&a->uuid, uuid)  != 0)