Fix printerlookup.asp: Add Dim objConn,rs for Option Explicit

Option Explicit requires all variables to be declared. objConn and rs
are created in sql.asp but need to be pre-declared in the calling page.

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Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

printerlookup.asp

@@ -2,12 +2,13 @@
 <%
 Option Explicit
 Response.Buffer = True
+Dim objConn, rs
 %>
 <!--#include file="includes/sql.asp"-->
 <%
 ' Lookup printer by IP address or FQDN and redirect to displayprinter.asp
 ' Used by Zabbix to link directly to printer details
-Dim ip, fqdn, lookupValue, cmd, rs
+Dim ip, fqdn, lookupValue, cmd
 
 ip = Trim(Request.QueryString("ip") & "")
 fqdn = Trim(Request.QueryString("fqdn") & "")