revision.c: explain what tree_difference does

diff --git a/merge-tree.c b/merge-tree.c
index 692ede0e3db7df66b2e5943dc58224f34c59fd8c..b2867ba7226ea6ff69876f8f20da87d200fe5fca 100644 (file)
--- a/merge-tree.c
+++ b/merge-tree.c
@@ -57,11 +57,11 @@ extern void *merge_file(struct blob *, struct blob *, struct blob *, unsigned lo
 
 static void *result(struct merge_list *entry, unsigned long *size)
 {
-       char type[20];
+       enum object_type type;
        struct blob *base, *our, *their;
 
        if (!entry->stage)
-               return read_sha1_file(entry->blob->object.sha1, type, size);
+               return read_sha1_file(entry->blob->object.sha1, &type, size);
        base = NULL;
        if (entry->stage == 1) {
                base = entry->blob;
@@ -80,10 +80,10 @@ static void *result(struct merge_list *entry, unsigned long *size)
 
 static void *origin(struct merge_list *entry, unsigned long *size)
 {
-       char type[20];
+       enum object_type type;
        while (entry) {
                if (entry->stage == 2)
-                       return read_sha1_file(entry->blob->object.sha1, type, size);
+                       return read_sha1_file(entry->blob->object.sha1, &type, size);
                entry = entry->link;
        }
        return NULL;