Make it clearer when Commit#description returns no_commit_message

app/models/commit.rb

@@ -193,12 +193,9 @@ class Commit
   # otherwise returns commit message without first line
   def description
     return safe_message if full_title.length >= 100
-    if safe_message.blank?
-      no_commit_message
-    else
-      safe_message.split("\n", 2)[1].try(:chomp)
-    end
+    return no_commit_message if safe_message.blank?
+    safe_message.split("\n", 2)[1].try(:chomp)
   end
   def description?

spec/models/commit_spec.rb

@@ -225,11 +225,12 @@ eos
   end
   describe 'description' do
-    it "returns no_commit_message when safe_message is blank" do
-      allow(commit).to receive(:safe_message).and_return('')
-      expect(commit.description).to eq("--no commit message")
+    it 'returns no_commit_message when safe_message is blank' do
+      allow(commit).to receive(:safe_message).and_return(nil)
+
+      expect(commit.description).to eq('--no commit message')
     end
-  
+
     it 'returns description of commit message if title less than 100 characters' do
       message = <<eos
 Lorem ipsum dolor sit amet, consectetur adipiscing elit. Donec sodales id felis id blandit.