Avoid catching ThreadDeath; just pass it on.

Cf. http://www.netbeans.org/nonav/issues/show_bug.cgi?id=47191


git-svn-id: https://svn.apache.org/repos/asf/ant/core/trunk@380877 13f79535-47bb-0310-9956-ffa450edef68

src/main/org/apache/tools/ant/taskdefs/Java.java

@@ -203,6 +203,8 @@ public class Java extends Task {
                 log(e);
                 return 0;
             }
+        } catch (ThreadDeath t) {
+            throw t; // cf. NB #47191
         } catch (Throwable t) {
             if (failOnError) {
                 throw new BuildException(t, getLocation());