Test test/jaxp/javax/xml/jaxp/unittest/validation/CR6740048.java run passes unexpectedly when missing the depentdent file test/jaxp/javax/xml/jaxp/unittest/validation/CR6740048.xsd.

The reproduce test command shows:
rm -rf test/jaxp/javax/xml/jaxp/unittest/validation/CR6740048.xsd ; jtreg -v:fail,error -nr -w tmp -jdk:build/linux-x86_64-server-release/images/jdk test/jaxp/javax/xml/jaxp/unittest/validation/CR6740048.java