added logging

git-svn-id: https://hudson.dev.java.net/svn/hudson/trunk/hudson/main@23621 71c3de6d-444a-0410-be80-ed276b4c234a

remoting/src/main/java/hudson/remoting/Which.java

@@ -120,8 +120,10 @@ public class Which {
                 return new File(zipFile.getName());
             } catch (NoSuchFieldException e) {
                 // something must have changed in JBoss5. fall through
+                LOGGER.log(Level.FINE, "Failed to resolve vfszip into a jar location",e);
             } catch (IllegalAccessException e) {
                 // something must have changed in JBoss5. fall through
+                LOGGER.log(Level.FINE, "Failed to resolve vfszip into a jar location",e);
             } finally {
                 is.close();
             }