env--helper: mark a file-local symbol as static

diff --git a/builtin/write-tree.c b/builtin/write-tree.c
index 3d46d22ee5261d2cf1233913b7b544e812c26122..45d61707e7d11e60e5ba2e6da90017fb38b30dc3 100644 (file)
--- a/builtin/write-tree.c
+++ b/builtin/write-tree.c
@@ -16,16 +16,16 @@ static const char * const write_tree_usage[] = {
        NULL
 };
 
-int cmd_write_tree(int argc, const char **argv, const char *unused_prefix)
+int cmd_write_tree(int argc, const char **argv, const char *cmd_prefix)
 {
        int flags = 0, ret;
-       const char *prefix = NULL;
+       const char *tree_prefix = NULL;
        struct object_id oid;
        const char *me = "git-write-tree";
        struct option write_tree_options[] = {
                OPT_BIT(0, "missing-ok", &flags, N_("allow missing objects"),
                        WRITE_TREE_MISSING_OK),
-               OPT_STRING(0, "prefix", &prefix, N_("<prefix>/"),
+               OPT_STRING(0, "prefix", &tree_prefix, N_("<prefix>/"),
                           N_("write tree object for a subdirectory <prefix>")),
                { OPTION_BIT, 0, "ignore-cache-tree", &flags, NULL,
                  N_("only useful for debugging"),
@@ -35,10 +35,10 @@ int cmd_write_tree(int argc, const char **argv, const char *unused_prefix)
        };
 
        git_config(git_default_config, NULL);
-       argc = parse_options(argc, argv, unused_prefix, write_tree_options,
+       argc = parse_options(argc, argv, cmd_prefix, write_tree_options,
                             write_tree_usage, 0);
 
-       ret = write_cache_as_tree(&oid, flags, prefix);
+       ret = write_cache_as_tree(&oid, flags, tree_prefix);
        switch (ret) {
        case 0:
                printf("%s\n", oid_to_hex(&oid));
@@ -50,7 +50,7 @@ int cmd_write_tree(int argc, const char **argv, const char *unused_prefix)
                die("%s: error building trees", me);
                break;
        case WRITE_TREE_PREFIX_ERROR:
-               die("%s: prefix %s not found", me, prefix);
+               die("%s: prefix %s not found", me, tree_prefix);
                break;
        }
        return ret;