search: If body search fails due to I/O error, keep the result as "unknown".

Found by Vadim Okun

diff --git a/src/lib-storage/index/index-search.c b/src/lib-storage/index/index-search.c
index 60e63db1e681993fe176d432ea2dc79d6dee16f8..33b11735c32d6a0fbc0cad11e842889e8408fc69 100644 (file)
--- a/src/lib-storage/index/index-search.c
+++ b/src/lib-storage/index/index-search.c
@@ -627,7 +627,7 @@ static void search_body(struct mail_search_arg *arg,
                i_assert(ret >= 0 || ctx->input->stream_errno != 0);
        }
 
-       ARG_SET_RESULT(arg, ret > 0);
+       ARG_SET_RESULT(arg, ret);
 }
 
 static int search_arg_match_text(struct mail_search_arg *args,