Fix some issues found with valgrind. Bug 479759 and bug 481692. r=Masatoshi Kimura <VYV03354@nifty.ne.jp>

extensions/universalchardet/src/base/nsMBCSGroupProber.cpp

@@ -156,7 +156,7 @@ nsProbingState nsMBCSGroupProber::HandleData(const char* aBuf, PRUint32 aLen)
     {
       if (!mIsActive[i])
         continue;
-      st = mProbers[i]->HandleData(aBuf + start, aLen + 1 - start);
+      st = mProbers[i]->HandleData(aBuf + start, aLen - start);
       if (st == eFoundIt)
       {
         mBestGuess = i;

extensions/universalchardet/src/base/nsUniversalDetector.cpp

@@ -184,9 +184,12 @@ nsresult nsUniversalDetector::HandleData(const char* aBuf, PRUint32 aLen)
           if (nsnull == mCharSetProbers[1])
             return NS_ERROR_OUT_OF_MEMORY;
         }
-        mCharSetProbers[2] = new nsLatin1Prober; 
         if (nsnull == mCharSetProbers[2])
-          return NS_ERROR_OUT_OF_MEMORY;
+        {
+          mCharSetProbers[2] = new nsLatin1Prober; 
+          if (nsnull == mCharSetProbers[2])
+            return NS_ERROR_OUT_OF_MEMORY;
+        }
       }
     }
     else

intl/uconv/ucvlatin/nsUCS2BEToUnicode.h

@@ -87,6 +87,7 @@ class nsUTF16ToUnicode : public nsUTF16ToUnicodeBase
 {
 public:
 
+  nsUTF16ToUnicode() { Reset();}
   NS_IMETHOD Convert(const char * aSrc, PRInt32 * aSrcLength,
       PRUnichar * aDest, PRInt32 * aDestLength);