fix clone wiki failed via ssh (#5503)

routers/private/wiki.go

@@ -0,0 +1,34 @@
+// Copyright 2017 The Gitea Authors. All rights reserved.
+// Use of this source code is governed by a MIT-style
+// license that can be found in the LICENSE file.
+
+package private
+
+import (
+	"code.gitea.io/gitea/models"
+
+	macaron "gopkg.in/macaron.v1"
+)
+
+// InitWiki initilizes wiki via repo id
+func InitWiki(ctx *macaron.Context) {
+	repoID := ctx.ParamsInt64("repoid")
+
+	repo, err := models.GetRepositoryByID(repoID)
+	if err != nil {
+		ctx.JSON(500, map[string]interface{}{
+			"err": err.Error(),
+		})
+		return
+	}
+
+	err = repo.InitWiki()
+	if err != nil {
+		ctx.JSON(500, map[string]interface{}{
+			"err": err.Error(),
+		})
+		return
+	}
+
+	ctx.Status(202)
+}