Make sure stream gets closed when input finishes

git-svn-id: https://svn.apache.org/repos/asf/ant/core/trunk@274092 13f79535-47bb-0310-9956-ffa450edef68

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

@@ -119,12 +119,12 @@ public class StreamPumper implements Runnable {
             while ((length = is.read(buf)) > 0) {
                 os.write(buf, 0, length);
             }
-            if (closeWhenExhausted) {
-                os.close();
-            }
         } catch (Exception e) {
             // ignore errors
         } finally {
+            if (closeWhenExhausted) {
+                os.close();
+            }
             synchronized (this) {
                 finished = true;
                 notify();