Bug 617667 useless null check of aIsMisspelled in [@ mozSpellChecker::CheckWord]

r=bz

extensions/spellcheck/src/mozSpellChecker.cpp

@@ -170,9 +170,7 @@ mozSpellChecker::CheckWord(const nsAString &aWord, PRBool *aIsMisspelled, nsTArr
       if (count)
         NS_FREE_XPCOM_ALLOCATED_POINTER_ARRAY(count, words);
     }
-    if(aIsMisspelled){
-      *aIsMisspelled = PR_TRUE;
-    }
+    *aIsMisspelled = PR_TRUE;
   }
   return NS_OK;
 }