Fix error on commit builds page when no builds yet

Closes #15509

app/views/projects/commit/_ci_commit.html.haml

@@ -16,7 +16,7 @@
     - if defined?(link_to_commit) && link_to_commit
       for commit
       = link_to ci_commit.short_sha, namespace_project_commit_path(@project.namespace, @project, ci_commit.sha), class: "monospace"
-    - if ci_commit.duration > 0
+    - if ci_commit.duration
       in
       = time_interval_in_words ci_commit.duration

spec/features/projects/commit/builds_spec.rb

+require 'spec_helper'
+
+feature 'project commit builds' do
+  given(:project) { create(:project) }
+
+  background do
+    user = create(:user)
+    project.team << [user, :master]
+    login_as(user)
+  end
+
+  context 'when no builds triggered yet' do
+    background do
+      create(:ci_commit, project: project,
+                         sha: project.commit.sha,
+                         ref: 'master')
+    end
+
+    scenario 'user views commit builds page' do
+      visit builds_namespace_project_commit_path(project.namespace,
+                                                 project, project.commit.sha)
+
+
+      expect(page).to have_content('Builds')
+    end
+  end
+end