Staging: speakup: &&/|| confusion in silent_store()

Fix test: the branch is always taken.

Signed-off-by: Roel Kluin <[e-mail]>
Cc: Andrew Morton <[e-mail]>
Cc: stable <[e-mail]>
Signed-off-by: Greg Kroah-Hartman <[e-mail]>

drivers/staging/speakup/kobjects.c

···
 	unsigned long flags;
 
 	len = strlen(buf);
-	if (len > 0 || len < 3) {
+	if (len > 0 && len < 3) {
 		ch = buf[0];
 		if (ch == '\n')
 			ch = '0';