[oauth] problem in OSX

[60-hz]

After a correct "Init" message, a "GET" works one time out of ten... when it works, any further GET returns:

Error while performing request: Problem with the SSL CA cert (path? access rights?) status2: 77 Problem\ with\ the\ SSL\ CA\ cert\ (path?\ access\ rights?)

Tested with twitter example, same patch works perfectly on Linux.

pd-0.51-1 OSX 10.15.4 PuRest v1.4.3 from Deken