Revert "Update recieve function to read full data from socket at once"

This reverts commit a3d2458c28.

src/lsquic/client.cr

@@ -225,10 +225,11 @@ module QUIC
           LibLsquic.engine_packet_in(engine, buffer[0, bytes_read], bytes_read, socket.local_address, socket.remote_address, Box.box(socket), 0) if bytes_read != 0
           LibLsquic.engine_process_conns(engine)
         end
-        @socket.try &.close
-        @socket = nil
       rescue IO::Error
         # may have already been closed
+      ensure
+        @socket.try &.close
+        @socket = nil
       end
     end