Analyser: make sure that the @c Variable associated with an external variable is still available.
Analyser: make sure that the @c Variable associated with an external variable is still available.

hsorby/libcellml,hsorby/libcellml,cellml/libcellml,hsorby/libcellml,nickerso/libcellml,cellml/libcellml,nickerso/libcellml,nickerso/libcellml,hsorby/libcellml,cellml/libcellml,nickerso/libcellml,cellml/libcellml