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

[Rene Scharfe <rene.scharfe@lsrfire.ath.cx>]

Signed-off-by: Rene Scharfe <rene.scharfe@lsrfire.ath.cx>
---
This patch applies to the current 'next' branch.

diff --git a/builtin-tar-tree.c b/builtin-tar-tree.c
index c20eb0e..e8e492f 100644
--- a/builtin-tar-tree.c
+++ b/builtin-tar-tree.c
@@ -390,7 +390,7 @@ int write_tar_archive(struct archiver_ar
 		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] == '/')
diff --git a/builtin-zip-tree.c b/builtin-zip-tree.c
index 4e79633..fdac2bd 100644
--- a/builtin-zip-tree.c
+++ b/builtin-zip-tree.c
@@ -363,7 +363,7 @@ int write_zip_archive(struct archiver_ar
 	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] == '/')