#180988 ���������������������������������������� in text causes universal AD to display in Big5

count every char for total.
yokoyama: review+
bzbarsky: superreview+

extensions/universalchardet/src/CharDistribution.h

@@ -59,12 +59,15 @@ public:
     //we only care about 2-bytes character in our distribution analysis
     order = (aCharLen == 2) ? GetOrder(aStr) : -1;
 
-    if (order >= 0 && (PRUint32)order < mTableSize)
+    if (order >= 0)
     {
-      //order is valid
       mTotalChars++;
-      if (512 > mCharToFreqOrder[order])
-        mFreqChars++;
+      //order is valid
+      if ((PRUint32)order < mTableSize)
+      {
+        if (512 > mCharToFreqOrder[order])
+          mFreqChars++;
+      }
     }
   };