output: #fixed code
                                public static List<String> callCommand(String command, String[] environ) {
      List<String> lines = new LinkedList<String>();
  
      PythonPlugin.LOG.debug("Calling command: '{}'", command);
  
      BufferedReader stdInput = null;
      Process process = null;
      try {
        if(environ == null){
          process = Runtime.getRuntime().exec(command);
        } else {
          process = Runtime.getRuntime().exec(command, environ);
        }
  
        stdInput = new BufferedReader(new InputStreamReader(process.getInputStream()));
        String s = null;
  
        while ((s = stdInput.readLine()) != null) {
          lines.add(s);
        }
      } catch (IOException e) {
        throw new SonarException("Error calling command '" + command +
                                 "', details: '" + e + "'");
      } finally {
        IOUtils.closeQuietly(stdInput);
        if (process != null) {
          IOUtils.closeQuietly(process.getInputStream());
          IOUtils.closeQuietly(process.getOutputStream());
          IOUtils.closeQuietly(process.getErrorStream());
        }
      }
  
      return lines;
    }
input: #vulnerable code 
                                public static List<String> callCommand(String command, String[] environ) {
      List<String> lines = new LinkedList<String>();
  
      PythonPlugin.LOG.debug("Calling command: '{}'", command);
  
      BufferedReader stdInput = null;
      try {
        Process p = null;
        if(environ == null){
          p = Runtime.getRuntime().exec(command);
        } else {
          p = Runtime.getRuntime().exec(command, environ);
        }
  
        stdInput = new BufferedReader(new InputStreamReader(p.getInputStream()));
        String s = null;
  
        while ((s = stdInput.readLine()) != null) {
          lines.add(s);
        }
      } catch (IOException e) {
        throw new SonarException("Error calling command '" + command +
                                 "', details: '" + e + "'");
      } finally {
        IOUtils.closeQuietly(stdInput);
      }
  
      return lines;
    } 
                              #location 15 
                              #vulnerability type RESOURCE_LEAK