Monitor: Increase size of percentalert to avoid gcc warning

gcc-8.1 complains about truncated string operations. While we know
percent will never grow larger than 100, it doesn't cost us anything
to increase the size of 'percentalert' on the stack like this.

Signed-off-by: Jes Sorensen <jsorensen@fb.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/Monitor.c b/Monitor.c
index c7c05d27..036103fb 100644
--- a/Monitor.c
+++ b/Monitor.c
@@ -557,7 +557,7 @@ static int check_array(struct state *st, struct mdstat_ent *mdstat,
 		alert("RebuildStarted", dev, NULL, ainfo);
 	if (st->percent >= 0 && mse->percent >= 0 &&
 	    (mse->percent / increments) > (st->percent / increments)) {
-		char percentalert[15];
+		char percentalert[18];
 		/*
 		 * "RebuildNN" (10 chars) or "RebuildStarted" (15 chars)
 		 */