document context create cannot execute in parallel
document context create cannot execute in parallel

Reported by Ash 20001 <ash20001@hotmail.com>

Signed-off-by: Andy Green <b471f5a494de34531c9e5a6e15abda71edd49104@linaro.org>
SoapyMan/libwebsockets,ralight/libwebsockets,pombredanne/libwebsockets,sartura/libwebsockets,ralight/libwebsockets,dumganhar/libwebsockets,dumganhar/libwebsockets,JoakimSoderberg/libwebsockets,dumganhar/libwebsockets,ralight/libwebsockets,SoapyMan/libwebsockets,JoakimSoderberg/libwebsockets,pombredanne/libwebsockets,pombredanne/libwebsockets,SoapyMan/libwebsockets,SoapyMan/libwebsockets,JoakimSoderberg/libwebsockets,pombredanne/libwebsockets,JoakimSoderberg/libwebsockets,sartura/libwebsockets,sartura/libwebsockets,sartura/libwebsockets,dumganhar/libwebsockets,sartura/libwebsockets,sartura/libwebsockets,ralight/libwebsockets,dumganhar/libwebsockets,ralight/libwebsockets,sartura/libwebsockets,SoapyMan/libwebsockets