Generator: improved coverage.
Generator: improved coverage.

Commit wasn't good enough since GCC also needs that return statement, as it should indeed sine the function needs to return a string! (Strangely enough, it is fine with Clang?!)

Anyway, that final could never be executed, which meant that coverage could never find it, hence we are doing it in a different way...

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