Merge change 25401 into eclair

* changes:
  Add a null checking to avoid crash.
diff --git a/core/java/android/webkit/WebView.java b/core/java/android/webkit/WebView.java
index abbbc00..ddee26d 100644
--- a/core/java/android/webkit/WebView.java
+++ b/core/java/android/webkit/WebView.java
@@ -2908,6 +2908,8 @@
                 getContext().getSystemService(Context.INPUT_METHOD_SERVICE);
 
         if (isTextView) {
+            if (mWebTextView == null) return;
+
             imm.showSoftInput(mWebTextView, 0);
             // Now we need to fake a touch event to place the cursor where the
             // user touched.