chang cast https://github.com/freedesktop/uchardet/commit/1898847eb69b581731c4a735bfb3a77ef4238012

iOSClient/Library/NCUchardet/src/nsCharSetProber.cpp

@@ -74,7 +74,7 @@ PRBool nsCharSetProber::FilterWithoutEnglishLetters(const char* aBuf, PRUint32 a
   if (meetMSB && curPtr > prevPtr) 
     while (prevPtr < curPtr) *newptr++ = *prevPtr++;  
 
-  newLen = (unsigned int)(newptr - *newBuf);
+  newLen = (PRUint32)(newptr - *newBuf);
 
   return PR_TRUE;
 }
@@ -119,7 +119,7 @@ PRBool nsCharSetProber::FilterWithEnglishLetters(const char* aBuf, PRUint32 aLen
     while (prevPtr < curPtr)
       *newptr++ = *prevPtr++;  
 
-  newLen = (unsigned int)(newptr - *newBuf);
+  newLen = (PRUint32)(newptr - *newBuf);
 
   return PR_TRUE;
 }