Get rid of most strtoul() and atoi() calls and use CString's features instead

git-svn-id: https://znc.svn.sourceforge.net/svnroot/znc/trunk@1320 726aef4b-f618-498e-8847-2d620e286838

ClientCommand.cpp

@@ -901,7 +901,7 @@ void CClient::UserCommand(const CString& sLine) {
 			return;
 		}
 
-		unsigned int uLineCount = strtoul(sLine.Token(2).c_str(), NULL, 10);
+		unsigned int uLineCount = sLine.Token(2).ToUInt();
 
 		if (uLineCount > 500) {
 			PutStatus("Max linecount is 500.");