watch: fix warning

getty: fix breakage; fix excessive stack usage

coreutils/watch.c

@@ -58,8 +58,9 @@ int watch_main(int argc, char **argv)
 			time_t t;
 
 			get_terminal_width_height(STDOUT_FILENO, &width, 0);
+			if (width < 1) width = 1; // paranoia
 			header = xrealloc(header, width--);
-			// We pad with spaces entire length
+			// '%-*s' pads header with spaces to the full width
 			snprintf(header, width, "Every %ds: %-*s", period, width, cmd);
 			time(&t);
 			thyme = ctime(&t);
@@ -75,4 +76,5 @@ int watch_main(int argc, char **argv)
 		system(cmd);
 		sleep(period);
 	}
+	return 0; // gcc thinks we can reach this :)
 }