Fix cast warnings

code/nel/include/nel/misc/sha1.h

@@ -51,7 +51,7 @@ struct CHashKey
 		else if (str.size() == 40)
 		{
 			HashKeyString.clear();
-			for(uint i = 0; i < str.size(); i+=2)
+			for (size_t i = 0; i < str.size(); i += 2)
 			{
 				uint8 val;
 				if (isdigit((unsigned char)str[i + 0]))

code/nel/src/misc/file.cpp

@@ -558,7 +558,7 @@ bool		CIFile::seek (sint32 offset, IStream::TSeekOrigin origin) const
 		return true;
 
 	// seek in the file. NB: if not in bigfile, _BigFileOffset==0.
-	if (nlfseek64(_F, _BigFileOffset+_ReadPos, SEEK_SET) != 0)
+	if (nlfseek64(_F, (sint64)_BigFileOffset + _ReadPos, SEEK_SET) != 0)
 		return false;
 	return true;
 }