Fix mask alignment
Fix mask alignment

Fix incorrect computation of buffer alignment in maskBytes. With this
change, all word operations on the buffer are aligned on word
boundaries.

helight/helight_code,gorilla/websocket,helight/helight_code,helight/helight_code,helight/helight_code,helight/helight_code,helight/helight_code,helight/helight_code,your-org/websocket,helight/helight_code,y3llowcake/websocket,helight/helight_code