Declaration before statements

Author: Andy Delcambre

ext/rugged/rugged_tree.c

@@ -127,11 +127,12 @@ static int rugged__treecount_cb(const char *root, const git_tree_entry *entry, v
 static VALUE rb_git_tree_entrycount_recursive(int argc, VALUE* argv, VALUE self)
 {
 	git_tree *tree;
-	Data_Get_Struct(self, git_tree, tree);
 	int error;
 	struct rugged_treecount_cb_payload payload;
 	VALUE rb_limit;
 
+	Data_Get_Struct(self, git_tree, tree);
+
 	rb_scan_args(argc, argv, "01", &rb_limit);
 
 	payload.limit = -1;