Call Fflush at the end of writeing a signed package to catch out
of disk space errors.

--- ./lib/rpmchecksig.c.orig	2005-12-14 20:54:39.000000000 +0000
+++ ./lib/rpmchecksig.c	2006-03-21 18:00:22.000000000 +0000
@@ -116,6 +116,10 @@ static int copyFile(FD_t *sfdp, const ch
 	rpmError(RPMERR_FREAD, _("%s: Fread failed: %s\n"), *sfnp, Fstrerror(*sfdp));
 	goto exit;
     }
+    if (Fflush(*tfdp) != 0) {
+	rpmError(RPMERR_FWRITE, _("%s: Fflush failed: %s\n"), *tfnp,
+	    Fstrerror(*tfdp));
+    }
 
     rc = 0;