*: better string sharing

text   data    bss    dec    hex filename
 849427    441   7556 857424  d1550 busybox_old
 849355    441   7556 857352  d1508 busybox_unstripped

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

coreutils/od_bloaty.c

@@ -502,7 +502,7 @@ check_and_close(void)
 	}
 
 	if (ferror(stdout)) {
-		bb_error_msg("write error");
+		bb_error_msg(bb_msg_write_error);
 		ioerror = 1;
 	}
 }