context_new
struct ctx_query* context_new(struct ub_ctx* ctx, const char* name, int rrtype,
q = context_new(ctx, name, rrtype, rrclass, NULL, NULL, NULL);
q = context_new(ctx, name, rrtype, rrclass, NULL, callback, mydata);
q = context_new(ctx, name, rrtype, rrclass, callback, NULL, mydata);
struct ctx_query* context_new(struct ub_ctx* ctx, const char* name, int rrtype,
q = context_new(ctx, name, rrtype, rrclass, NULL, NULL, NULL);
q = context_new(ctx, name, rrtype, rrclass, NULL, callback, mydata);
q = context_new(ctx, name, rrtype, rrclass, callback, NULL, mydata);