修复RxJava取消订阅后，线程仍在继续执行，导致的崩溃

Author: VeiZhang

AndroidExecLibrary/src/main/java/com/excellence/exec/CommandTask.java

@@ -172,7 +172,7 @@ public void accept(Long aLong) throws Exception {
                     BufferedReader stdin = new BufferedReader(new InputStreamReader(mProcess.getInputStream()));
                     StringBuilder result = new StringBuilder();
                     String line = null;
-                    while (mStatus == STATUS_RUNNING && (line = stdin.readLine()) != null) {
+                    while ((line = stdin.readLine()) != null) {
                         if (mStatus == STATUS_RUNNING) {
                             restartTimer();
                             mIListener.onProgress(line);
@@ -222,9 +222,6 @@ private void killProcess() {
             // close stream
             mProcess.destroy();
         }
-        if (mCommandTask != null && !mCommandTask.isDisposed()) {
-            mCommandTask.dispose();
-        }
     }
 
     protected void cancel() {