Fix an NPE in InputMethodService when mExtractAction is null.

This happens with certain third-party IMEs.

Fixes: http://code.google.com/p/cyanogenmod/issues/detail?id=231

Change-Id: Idf4349ee9c7c8f73c255745bc65b49ba9b593874

Author: hyperb1iss

core/java/android/inputmethodservice/InputMethodService.java

@@ -1981,15 +1981,19 @@ public void onUpdateExtractingViews(EditorInfo ei) {
                 ei.inputType != InputType.TYPE_NULL);
         if (hasAction) {
             mExtractAccessories.setVisibility(View.VISIBLE);
-            if (ei.actionLabel != null) {
-                mExtractAction.setText(ei.actionLabel);
-            } else {
-                mExtractAction.setText(getTextForImeAction(ei.imeOptions));
+            if (mExtractAction != null) {
+                if (ei.actionLabel != null) {
+                    mExtractAction.setText(ei.actionLabel);
+                } else {
+                    mExtractAction.setText(getTextForImeAction(ei.imeOptions));
+                }
+                mExtractAction.setOnClickListener(mActionClickListener);
             }
-            mExtractAction.setOnClickListener(mActionClickListener);
         } else {
             mExtractAccessories.setVisibility(View.GONE);
-            mExtractAction.setOnClickListener(null);
+            if (mExtractAction != null) {
+                mExtractAction.setOnClickListener(null);
+            }
         }
     }