Bug 106386 Correct misspellings in source code

patch by alfred.peng@sun.com r=brade

content/html/content/src/nsHTMLInputElement.cpp

@@ -320,7 +320,7 @@ protected:
    */
   PRInt16                  mBitField;
   /**
-   * The current value of the input if it has been changed from the deafault
+   * The current value of the input if it has been changed from the default
    */
   char*                    mValue;
   /**