win32u: Use RtlGetLastWin32Error() instead of GetLastError().

dlls/ntdll/unix/env.c

@@ -2392,6 +2392,14 @@ ULONG WINAPI RtlNtStatusToDosError( NTSTATUS status )
 }
 
 /**********************************************************************
+ *      RtlGetLastWin32Error  (ntdll.so)
+ */
+DWORD WINAPI RtlGetLastWin32Error(void)
+{
+    return NtCurrentTeb()->LastErrorValue;
+}
+
+/**********************************************************************
  *      RtlSetLastWin32Error  (ntdll.so)
  */
 void WINAPI RtlSetLastWin32Error( DWORD err )

dlls/win32u/clipboard.c

@@ -56,7 +56,7 @@ static struct list formats_to_free = LIST_INIT( formats_to_free );
 static const char *debugstr_format( UINT id )
 {
     WCHAR buffer[256];
-    DWORD le = GetLastError();
+    DWORD le = RtlGetLastWin32Error();
     BOOL r = NtUserGetClipboardFormatName( id, buffer, ARRAYSIZE(buffer) );
     RtlSetLastWin32Error(le);
 

dlls/win32u/spy.c

@@ -2213,7 +2213,7 @@ static void SPY_GetWndName( SPY_INSTANCE *sp_e )
 const char *debugstr_msg_name( UINT msg, HWND hWnd )
 {
     SPY_INSTANCE ext_sp_e;
-    DWORD save_error = GetLastError();
+    DWORD save_error = RtlGetLastWin32Error();
 
     ext_sp_e.msgnum = msg;
     ext_sp_e.msg_hwnd   = hWnd;
@@ -2504,7 +2504,7 @@ static void SPY_DumpStructure(const SPY_INSTANCE *sp_e, BOOL enter)
                     /* for CUSTOMDRAW, dump all the data for TOOLBARs */
                     if (pnmh->code == NM_CUSTOMDRAW) {
                         /* save and restore error code over the next call */
-                        save_error = GetLastError();
+                        save_error = RtlGetLastWin32Error();
                         NtUserGetClassName( pnmh->hwndFrom, FALSE, &str );
                         RtlSetLastWin32Error(save_error);
                         if (wcscmp(TOOLBARCLASSNAMEW, from_class) == 0)
@@ -2597,7 +2597,7 @@ void spy_enter_message( INT iFlag, HWND hWnd, UINT msg, WPARAM wParam, LPARAM lP
 {
     SPY_INSTANCE sp_e;
     int indent;
-    DWORD save_error = GetLastError();
+    DWORD save_error = RtlGetLastWin32Error();
 
     if (!spy_init() || exclude_msg(msg)) return;
 
@@ -2652,7 +2652,7 @@ void spy_exit_message( INT iFlag, HWND hWnd, UINT msg, LRESULT lReturn,
 {
     SPY_INSTANCE sp_e;
     int indent;
-    DWORD save_error = GetLastError();
+    DWORD save_error = RtlGetLastWin32Error();
 
     if (!TRACE_ON(message) || exclude_msg(msg) ||
         (exclude_dwp() && iFlag == SPY_RESULT_DEFWND))

dlls/win32u/window.c

@@ -852,7 +852,7 @@ BOOL is_window_enabled( HWND hwnd )
 
     RtlSetLastWin32Error( NO_ERROR );
     ret = get_window_long( hwnd, GWL_STYLE );
-    if (!ret && GetLastError() != NO_ERROR) return FALSE;
+    if (!ret && RtlGetLastWin32Error() != NO_ERROR) return FALSE;
     return !(ret & WS_DISABLED);
 }
 
@@ -4879,7 +4879,7 @@ static WND *create_window_handle( HWND parent, HWND owner, UNICODE_STRING *name,
 
     if (!handle)
     {
-        WARN( "error %d creating window\n", GetLastError() );
+        WARN( "error %d creating window\n", RtlGetLastWin32Error() );
         return NULL;
     }