Fix new pull request link (#3133)

* Fix new pull request link

* Only show button for branches

modules/context/repo.go

@@ -427,7 +427,6 @@ func RepoAssignment() macaron.Handler {
 				return
 			}
 		}
-		ctx.Data["IsForkedRepo"] = repo.IsFork
 
 		// People who have push access or have forked repository can propose a new pull request.
 		if ctx.Repo.IsWriter() || (ctx.IsSigned && ctx.User.HasForkedRepo(ctx.Repo.Repository.ID)) {

templates/repo/home.tmpl

@@ -25,9 +25,9 @@
 		</div>
 		{{template "repo/sub_menu" .}}
 		<div class="ui secondary menu">
-			{{if .PullRequestCtx.Allowed}}
+			{{if and .PullRequestCtx.Allowed .IsViewBranch}}
 				<div class="fitted item">
-					<a href="{{.BaseRepo.Link}}/compare/{{.BaseRepo.DefaultBranch}}...{{if .IsForkedRepo}}{{.Repository.Owner.Name}}:{{else}}{{if .SignedUser.HasForkedRepo .BaseRepo.ID}}{{.SignedUser.Name}}:{{end}}{{end}}{{.BranchName}}">
+					<a href="{{.BaseRepo.Link}}/compare/{{.BaseRepo.DefaultBranch}}...{{.Repository.Owner.Name}}:{{.BranchName}}">
 						<button class="ui green tiny compact button"><i class="octicon octicon-git-compare"></i></button>
 					</a>
 				</div>