title: TBXML parsing issue while the value cannot get in UILabel
body: <p>In my app i'm using TBXML parser where i need to get a value from xml file and print it on the label...This is my xml file in server</p>
  
  <pre><code> &lt;gold&gt;
   &lt;price&gt;
   &lt;title&gt;22 K Gold&lt;/title&gt;
   &lt;/price&gt;
   &lt;price&gt;
   &lt;title&gt;24 K Gold&lt;/title&gt;
   &lt;/price&gt;
   &lt;/gold&gt;
  </code></pre>
  
  <p>any my Viewcontroller.h looks like</p>
  
  <pre><code>#import &lt;UIKit/UIKit.h&gt;
  #import "TBXML.h"
  
   @interface ViewController : UIViewController{
  
  IBOutlet UILabel *lab;
  TBXML *tbxml;
  }
  
  
  
  @end
  </code></pre>
  
  <p>and my Viewcontrooler.m looks like</p>
  
  <pre><code> - (void)viewDidLoad
  {
  [super viewDidLoad];
  // Do any additional setup after loading the view, typically from a nib.
  NSData *xmlData = [[NSData alloc]initWithContentsOfURL:[NSURL URLWithString:@"http://www.abcde.com/sample.xml"]];
   tbxml = [[TBXML alloc]initWithXMLData:xmlData];
  
  
  TBXMLElement * root = tbxml.rootXMLElement;
  
  if (root)
  {
      TBXMLElement * elem_PLANT = [TBXML childElementNamed:@"price" parentElement:root];
      while (elem_PLANT !=nil)
      {
          TBXMLElement * elem_BOTANICAL = [TBXML childElementNamed:@"title" parentElement:elem_PLANT];
          NSString *botanicalName = [TBXML textForElement:elem_BOTANICAL];
          lab.text=[NSString stringWithFormat:@"re %@", botanicalName];
  
          elem_PLANT = [TBXML nextSiblingNamed:@"price" searchFromElement:elem_PLANT]; 
  
          elem_BOTANICAL = [TBXML childElementNamed:@"title" parentElement:elem_PLANT]; 
  
          botanicalName = [TBXML textForElement:elem_BOTANICAL];
          lab1.text=[NSString stringWithFormat:@"re %@", botanicalName];
      }
  }
  
  }
  </code></pre>
  
  <p>i'm getting BAD_ACCESS thread.Am i missing anything...Help pls...</p>