Make reuseCount to be PRUint32

netwerk/base/src/nsSocketTransport.h

@@ -228,8 +228,8 @@ protected:
   PRInt32                           mWriteCount;
   nsCOMPtr<nsISupports>             mWriteContext;
   PRInt32							mBytesExpected;
-  PRInt32                           mReuseCount;
-  PRInt32                           mLastReuseCount;
+  PRUint32                          mReuseCount;
+  PRUint32                          mLastReuseCount;
 
   // The following four members are used when AsyncWrite(...) is called
   // with an nsIInputStream which does not also support the