[ruby/net-http] Fix on 2.7

ruby/net-http@5194fd541e
ruby · Aug 16, 2023 · 70da92c · 70da92c
1 parent 4d21134
commit 70da92c
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/lib/net/http.rb b/lib/net/http.rb
@@ -1615,7 +1615,7 @@ def connect
                                       write_timeout: @write_timeout,
                                       continue_timeout: @continue_timeout,
                                       debug_output: @debug_output)
-          buf = "CONNECT #{conn_address}:#{@port} HTTP/#{HTTPVersion}\r\n"
+          buf = +"CONNECT #{conn_address}:#{@port} HTTP/#{HTTPVersion}\r\n"
           buf << "Host: #{@address}:#{@port}\r\n"
           if proxy_user
             credential = ["#{proxy_user}:#{proxy_pass}"].pack('m0')