Everywhere: Remove unintentional partial stream reads and writes

Author: https://github.com/timschumi
Commit: ae51c1821c
Pull-request: https://github.com/SerenityOS/serenity/pull/17684
Reviewed-by: https://github.com/JanDeVisser ✅
Reviewed-by: https://github.com/alimpfard
Reviewed-by: https://github.com/linusg ✅

Userland/Utilities/nc.cpp

@@ -82,8 +82,7 @@ ErrorOr<int> serenity_main(Main::Arguments arguments)
             auto nread = TRY(Core::System::read(STDIN_FILENO, buffer_span));
             buffer_span = buffer_span.trim(nread);
 
-            // FIXME: This should write the entire span.
-            TRY(socket->write_some({ buffer_span.data(), static_cast<size_t>(nread) }));
+            TRY(socket->write_until_depleted({ buffer_span.data(), static_cast<size_t>(nread) }));
         }
     }