[pedantic] Test a class against nil, not NULL
[pedantic] Test a class against nil, not NULL

gamechanger/GRMustache,saim80/GRMustache,sdonly/GRMustache,groue/GRMustache,ipmobiletech/GRMustache,samdeane/GRMustache,sdonly/GRMustache,lumoslabs/GRMustache,groue/GRMustache,samdeane/GRMustache,mz2/GRMustache,saim80/GRMustache,sdonly/GRMustache,ipmobiletech/GRMustache,lumoslabs/GRMustache,ipmobiletech/GRMustache,ThesaurusSoftware/GRMustache,ThesaurusSoftware/GRMustache,lumoslabs/GRMustache,ThesaurusSoftware/GRMustache,groue/GRMustache,samdeane/GRMustache,mz2/GRMustache,saim80/GRMustache,gamechanger/GRMustache,mz2/GRMustache