IMAP: only send partial if startIndex>0 for Outlook

git-svn-id: http://svn.code.sf.net/p/davmail/code/trunk@431 3d1905a2-6b24-0410-a738-b14d5a86fcbd

src/java/davmail/imap/ImapConnection.java

@@ -503,7 +503,7 @@ public class ImapConnection extends AbstractConnection {
                 }
                 buffer.append(" RFC822.SIZE ").append(rfc822size).append(" ").append("BODY[]");
                 // partial
-                if (ltIndex >= 0) {
+                if (startIndex > 0) {
                     buffer.append('<').append(startIndex).append('>');
                 }
                 buffer.append(" {").append(baos.size()).append("}");