Use xstrdup instead of strdup in builtin-{tar,zip}-tree.c

Signed-off-by: Rene Scharfe <rene.scharfe@lsrfire.ath.cx>
Signed-off-by: Junio C Hamano <junkio@cox.net>
(cherry picked from 5d2aea4cb383a43e40d47ab69d8ad7a495df6ea2 commit)

builtin-tar-tree.c

@@ -390,7 +390,7 @@ int write_tar_archive(struct archiver_args *args)
 		write_global_extended_header(args->commit_sha1);
 
 	if (args->base && plen > 0 && args->base[plen - 1] == '/') {
-		char *base = strdup(args->base);
+		char *base = xstrdup(args->base);
 		int baselen = strlen(base);
 
 		while (baselen > 0 && base[baselen - 1] == '/')

builtin-zip-tree.c

@@ -363,7 +363,7 @@ int write_zip_archive(struct archiver_args *args)
 	zip_dir_size = ZIP_DIRECTORY_MIN_SIZE;
 
 	if (args->base && plen > 0 && args->base[plen - 1] == '/') {
-		char *base = strdup(args->base);
+		char *base = xstrdup(args->base);
 		int baselen = strlen(base);
 
 		while (baselen > 0 && base[baselen - 1] == '/')