ntdll: Avoid using wine_get_user_name() from libwine.

dlls/ntdll/env.c

@@ -27,6 +27,9 @@
 #ifdef HAVE_SYS_STAT_H
 # include <sys/stat.h>
 #endif
+#ifdef HAVE_PWD_H
+# include <pwd.h>
+#endif
 #ifdef HAVE_UNISTD_H
 # include <unistd.h>
 #endif
@@ -386,15 +389,27 @@ static void set_wow64_environment( WCHAR **env )
     UNICODE_STRING valW = { 0, sizeof(buf), buf };
     OBJECT_ATTRIBUTES attr;
     UNICODE_STRING nameW;
-    const char *p, *name;
+    const char *p;
+    const char *home = getenv( "HOME" );
+    const char *name = getenv( "USER" );
     WCHAR *val;
     HANDLE hkey;
     DWORD i;
 
+    if (!home || !name)
+    {
+        struct passwd *pwd = getpwuid( getuid() );
+        if (pwd)
+        {
+            if (!home) home = pwd->pw_dir;
+            if (!name) name = pwd->pw_name;
+        }
+    }
+
     /* set the Wine paths */
 
     set_wine_path_variable( env, winedatadirW, wine_get_data_dir() );
-    set_wine_path_variable( env, winehomedirW, getenv("HOME") );
+    set_wine_path_variable( env, winehomedirW, home );
     set_wine_path_variable( env, winebuilddirW, wine_get_build_dir() );
     set_wine_path_variable( env, wineconfigdirW, config_dir );
     for (i = 0; (p = wine_dll_enum_load_path( i )); i++)
@@ -407,7 +422,7 @@ static void set_wow64_environment( WCHAR **env )
 
     /* set user name */
 
-    name = wine_get_user_name();
+    if (!name) name = "wine";
     if ((p = strrchr( name, '/' ))) name = p + 1;
     if ((p = strrchr( name, '\\' ))) name = p + 1;
     ntdll_umbstowcs( name, strlen(name) + 1, buf, ARRAY_SIZE(buf) );