Improve exception handling.
Improve exception handling.

* subversion/bindings/javahl/native/SVNClient.cpp
  (getChangelist): Test whether an exception is thrown after calling
   JNIUtil::makeJString().


git-svn-id: f8a4e5e023278da1e04e203c7fe051e3c4285d88@866411 13f79535-47bb-0310-9956-ffa450edef68

wbond/subversion,YueLinHo/Subversion,YueLinHo/Subversion,wbond/subversion,YueLinHo/Subversion,wbond/subversion,wbond/subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,wbond/subversion,YueLinHo/Subversion,YueLinHo/Subversion,wbond/subversion,wbond/subversion