Revert std changes

spec/std/socket/socket_spec.cr

@@ -45,30 +45,23 @@ describe Socket do
   it "sends messages" do
     port = unused_local_port
     server = Socket.tcp(Socket::Family::INET6)
-    begin
-      server.bind("::1", port)
-      server.listen
-      address = Socket::IPAddress.new("::1", port)
-      spawn do
-        client = server.accept
-        begin
-          client.gets.should eq "foo"
-          client.puts "bar"
-        ensure
-          client.close
-        end
-      end
-      socket = Socket.tcp(Socket::Family::INET6)
-      begin
-        socket.connect(address)
-        socket.puts "foo"
-        socket.gets.should eq "bar"
-      ensure
-        socket.close
-      end
+    server.bind("::1", port)
+    server.listen
+    address = Socket::IPAddress.new("::1", port)
+    spawn do
+      client = server.accept
+      client.gets.should eq "foo"
+      client.puts "bar"
     ensure
-      server.close
+      client.try &.close
     end
+    socket = Socket.tcp(Socket::Family::INET6)
+    socket.connect(address)
+    socket.puts "foo"
+    socket.gets.should eq "bar"
+  ensure
+    socket.try &.close
+    server.try &.close
   end
 
   describe "#bind" do

src/process.cr

@@ -301,7 +301,7 @@ class Process
   private def stdio_to_fd(stdio : Stdio, for dst_io : IO::FileDescriptor) : IO::FileDescriptor
     case stdio
     when IO::FileDescriptor
-      stdio.as(IO::FileDescriptor)
+      stdio
     when IO
       if dst_io == STDIN
         fork_io, process_io = IO.pipe(read_blocking: true)