Refuse harder and print a debug warning in case some bad code

tries to write invalid lines to the config file.
Patch by DGandalf, thanks.


git-svn-id: https://znc.svn.sourceforge.net/svnroot/znc/trunk@1962 726aef4b-f618-498e-8847-2d620e286838

User.cpp

@@ -602,8 +602,13 @@ bool CUser::DelChan(const CString& sName) {
 	return false;
 }
 
-bool CUser::PrintLine(CFile& File, const CString& sName, const CString& sValue) {
+bool CUser::PrintLine(CFile& File, CString sName, CString sValue) {
+	sName.Trim();
+	sValue.Trim();
+
 	if (sName.empty() || sValue.empty()) {
+		DEBUG("Refused writing an invalid line to a user config. ["
+			<< sName << "] [" << sValue << "]");
 		return false;
 	}