fix rubocop cop Style/SpaceAroundOperators

lib/zip/extra_field/unix.rb

@@ -18,8 +18,8 @@ module Zip
       # size: 0 for central directory. 4 for local header
       return if !size || size == 0
       uid, gid = content.unpack('vv')
-      @uid     ||= uid
-      @gid     ||= gid
+      @uid ||= uid
+      @gid ||= gid
     end
 
     def ==(other)

lib/zip/file.rb

@@ -190,7 +190,7 @@ module Zip
             segment_bytes_left = ssegment_size - chunk_bytes
             buffer_size        = segment_bytes_left < DATA_BUFFER_SIZE ? segment_bytes_left : DATA_BUFFER_SIZE
             chunk              = zip_file.read(buffer_size)
-            chunk_bytes        += buffer_size
+            chunk_bytes += buffer_size
             szip_file << chunk
             # Info for track splitting
             yield segment_count, szip_file_index, chunk_bytes, ssegment_size if block_given?

lib/zip/ioextras/abstract_input_stream.rb

@@ -80,7 +80,7 @@ module Zip
           over_limit = (number_of_bytes && @output_buffer.bytesize >= number_of_bytes)
         end
         sep_index = [match_index + a_sep_string.bytesize, number_of_bytes || @output_buffer.bytesize].min
-        @pos     += sep_index
+        @pos += sep_index
         @output_buffer.slice!(0...sep_index)
       end