[PATCH 3/5] mountmgr.sys: Do not create empty registry nodes for serial or parallel ports.

[Janne Kekkonen]

From: Janne Kekkonen

Prevent creating empty registry node.
User definitions for serial and parallel ports are taken into count.
Removed double variables.

Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=58598
---
 dlls/mountmgr.sys/device.c | 10 ++++------
 1 file changed, 4 insertions(+), 6 deletions(-)

diff --git a/dlls/mountmgr.sys/device.c b/dlls/mountmgr.sys/device.c
index 664a44079a7..a9d9dcf38f6 100644
--- a/dlls/mountmgr.sys/device.c
+++ b/dlls/mountmgr.sys/device.c
@@ -1987,8 +1987,6 @@ static void create_port_devices( DRIVER_OBJECT *driver, const char *devices )
     int i, n;
     HKEY hKey;
     BOOL user_defined_ports;
-    WCHAR port_name[256];
-    DWORD port_name_len;

if (driver == serial_driver)
     {
@@ -2008,15 +2006,15 @@ static void create_port_devices( DRIVER_OBJECT *driver, const char *devices )
     if (RegOpenKeyExW(HKEY_LOCAL_MACHINE, L"Software\Wine\Ports" , 0, KEY_READ , &hKey)==ERROR_SUCCESS)
     {
         i=0;             
-        port_name_len = 255;
+        port_len = ARRAY_SIZE(port);
         user_defined_ports=FALSE;
-        while ((RegEnumValueW(hKey, i, port_name, &port_name_len, NULL, NULL, NULL, NULL) == ERROR_SUCCESS)) {
-            if (wcsnicmp( port_name, port_prefix, 3)==0){
+        while ((RegEnumValueW(hKey, i, port, &port_len, NULL, NULL, NULL, NULL) == ERROR_SUCCESS)) {
+            if (wcsnicmp( port, port_prefix, 3)==0){
                 user_defined_ports=TRUE;
                 break;
             }
             i++;
-            port_name_len = 255;
+            port_len = 255;
          }
        RegCloseKey(hKey);
     }