Patch for bug in search function

Hello,

maildrop 2.7.x and 2.8.x has a bug the causes that the last line of a 
text is not searched. While that alone is a bug, there are cases where a 
whole HTML body only consists of one huge (over 50 kb) line. In that 
case the whole body is not searched.

A simple patch fixes the bug.

Regards Andreas

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--- a/libs/maildrop/search.C	2014-01-16 01:50:53.000000000 +0100
+++ b/libs/maildrop/search.C	2014-11-08 03:31:22.332009388 +0100
@@ -215,6 +215,8 @@
 	foreachp_arg=foreachp;
 	rfc2045_decodemsgtoutf8(&msg.rfc2045src_parser,
 				msg.rfc2045p, &decode_cb);
+	if (current_line.Length() >= 1)
+		search_cb("\n", 1);
 	return 0;
 }