Change second argument to module in OnLoad() from sErrorMsg to sMessage.

This message is always displayed when the module returns (well, screw webadmin)
and this way a module can notify the user if it loaded but something unexpected
happened.

As you might guess, no one uses this ATM :)

Proposal comes from prozac


git-svn-id: https://znc.svn.sourceforge.net/svnroot/znc/trunk@855 726aef4b-f618-498e-8847-2d620e286838

modules/email.cpp

@@ -101,7 +101,7 @@ public:
 			m_pManager->DelSockByAddr( vSocks[a] );
 	}
 
-	virtual bool OnLoad(const CString & sArgs, CString& sErrorMsg) {
+	virtual bool OnLoad(const CString & sArgs, CString& sMessage) {
 		m_sMailPath = sArgs;
 
 		StartParser();