savecore: emit information about saved cores under verbose

Declare how many cores we saved, and where we saved them to.  Drop a
comment about emitting little information; it's obvious from the block
in question that we emit nothing without verbose.

Reviewed by:	markj
Sponsored by:	NetApp, Inc.
Sponsored by:	Klara, Inc.
X-NetApp-PR:	freebsd#65
Differential Revision:	https://reviews.freebsd.org/D31393

sbin/savecore/savecore.c

@@ -1316,7 +1316,6 @@ main(int argc, char **argv)
 	for (i = 0; i < argc; i++)
 		DoFile(savedir, savedirfd, devs[i]);
 
-	/* Emit minimal output. */
 	if (nfound == 0) {
 		if (checkfor) {
 			if (verbose)
@@ -1333,6 +1332,8 @@ main(int argc, char **argv)
 			exit(1);
 		} else if (verbose)
 			logmsg(LOG_WARNING, "no unsaved dumps found");
+	} else if (verbose) {
+		logmsg(LOG_NOTICE, "%d cores saved in %s\n", nsaved, savedir);
 	}
 
 	return (0);