--- rpm-4.11.3/sign/rpmgensig.c.old	2014-09-05 13:49:16.000000000 +0200
+++ rpm-4.11.3/sign/rpmgensig.c	2018-05-03 10:58:37.104522827 +0200
@@ -506,6 +506,7 @@
 	    }
 	    goto exit;
 	}
+	res = -1;
     }
 
     /* Reallocate the signature into one contiguous region. */