Run all unsafe autocorrections

Author: andyundso

lib/tiny_tds/bin.rb

@@ -96,7 +96,7 @@ def binary?(file)
       return false unless bytes
       bytes = 4096 if bytes > 4096
       s = (File.read(file, bytes) || "")
-      s = s.encode("US-ASCII", undef: :replace).split("")
+      s = s.encode("US-ASCII", undef: :replace).chars
       ((s.size - s.grep(" ".."~").size) / s.size.to_f) > 0.30
     end
   end

test/client_test.rb

@@ -47,7 +47,7 @@ class ClientTest < TinyTds::TestCase
         assert_equal encoding, client.charset
         assert_equal Encoding.find(encoding), client.encoding
       ensure
-        client.close if client
+        client&.close
       end
     end
 
@@ -58,7 +58,7 @@ class ClientTest < TinyTds::TestCase
         begin
           client = new_connection dataserver: nil, host: host, port: port
         ensure
-          client.close if client
+          client&.close
         end
       end
     end