Install: perform DB version check while connected as admin

This avoids the issue where the call to ServerInfo() only works on MySQL
if the database is open, which may not be the case when testing with
database user (e.g. if user does not exist or does not have access)

Fixes #7635

admin/install.php

@@ -379,6 +379,12 @@ function InsertData( $p_table, $p_data ) {
 		} else {
 			print_test_result( GOOD );
 		}
+
+		# due to a bug in ADODB, this call prompts warnings, hence the @
+		# the check only works on mysql if the database is open
+		$t_version_info = @$g_db->ServerInfo();
+		echo '<br /> Running ' . $f_db_type . ' version ' . nl2br( $t_version_info['description'] );
+
 	} else {
 		print_test_result( BAD, true, 'Does administrative user have access to the database? ( ' . db_error_msg() . ' )' );
 	}
@@ -420,9 +426,6 @@ function InsertData( $p_table, $p_data ) {
 	<td bgcolor="#ffffff">
 		Checking Database Server Version
 		<?php
-		# due to a bug in ADODB, this call prompts warnings, hence the @
-		# the check only works on mysql if the database is open
-		$t_version_info = @$g_db->ServerInfo();
 		echo '<br /> Running ' . $f_db_type . ' version ' . nl2br( $t_version_info['description'] );
 		?>
 	</td>