Fix admin.cpp. Search and replace isn't what it used to be.

git-svn-id: https://znc.svn.sourceforge.net/svnroot/znc/trunk@1847 726aef4b-f618-498e-8847-2d620e286838

modules/admin.cpp

@@ -379,12 +379,12 @@ class CAdminMod : public CModule {
 		CString sChan      = sLine.Token(3);
 		CString sValue     = sLine.Token(4, true);
 
-		if (value.empty()) {
+		if (sValue.empty()) {
 			PutModule("Usage: setchan <variable> <username> <chan> <value>");
 			return;
 		}
 
-		CUser* user = GetUser(sUsername);
+		CUser* pUser = GetUser(sUsername);
 		if (!pUser)
 			return;