production win32/1.1.8 -> isAssignableFrom caues crash if class is unresolved

With the win32 1.1.8 production JDK, isAssignableFrom will cause a
crash (looks like the equavilant of a seg fault -> memory at 0 is
being referenced)

This does not happen on other JDKs (including 1.2, hotspot, jdk1.1.7 or
solaris jdks)

This ONLY happens if you have a jar file on the class path

I am including a test case which will demonstrate this problem

It creates a class loader which loads a class from a directory

To use the test case:

* unzip the test.zip file
  It contains:
MyClassLoader.java -> simple test case
MyClassLoader.class -> compiled version of test case
test\emptyclass.java -> a java class with nothing in it
test\emptyclass.class -> compiled empty class
lib\servlet.jar -> the servlet jar file

* set your class path to:
set CLASSPATH=.;.\lib\servlet.jar

* run the test ...
   To get the crash use:
java MyClassLoader test emptyclass fail

   To see a non-failing case (because the call is made after resolve) use:
java MyClassLoader test emptyclass


  e.g.: if there is a
java MyClassLoader foo myclass -> successful case
java MyClassLoader foo myclass fail -> crash should occur