fix refactoring error with Blob.binary?

remove some lint

lib/gitlab/encoding_helper.rb

@@ -33,12 +33,12 @@ module Gitlab
 
       # encode and clean the bad chars
       message.replace clean(message)
-    rescue => e
+    rescue
       encoding = detect ? detect[:encoding] : "unknown"
       "--broken encoding: #{encoding}"
     end
 
-    def all_binary?(data, detect=nil)
+    def all_binary?(data, detect = nil)
       detect ||= CharlockHolmes::EncodingDetector.detect(data)
       detect && detect[:type] == :binary
     end

lib/gitlab/git/blob.rb

@@ -57,6 +57,10 @@ module Gitlab
           end
         end
 
+        def binary?(data)
+          EncodingHelper.libgit2_binary?(data)
+        end
+
         private
 
         # Recursive search of blob id by path
@@ -161,10 +165,6 @@ module Gitlab
             end
           end
         end
-
-        def binary?(data)
-          EncodingHelper.libgit2_binary?(data)
-        end
       end
 
       def initialize(options)

lib/gitlab/git/diff.rb

@@ -201,7 +201,7 @@ module Gitlab
         return @diff unless all_binary?(@diff)
 
         # the diff is binary, let's make a message for it
-        Diff::binary_message(@old_path, @new_path)
+        Diff.binary_message(@old_path, @new_path)
       end
 
       private