riched20: WM_CONTEXTMENU fix for custom context menus.

dlls/riched20/editor.c

@@ -1077,13 +1077,13 @@ ME_KeyDown(ME_TextEditor *editor, WORD nKey)
   return FALSE;
 }
 
-static void ME_ShowContextMenu(ME_TextEditor *editor, int x, int y)
+static BOOL ME_ShowContextMenu(ME_TextEditor *editor, int x, int y)
 {
   CHARRANGE selrange;
   HMENU menu;
   int seltype = 0;
   if(!editor->lpOleCallback)
-    return;
+    return FALSE;
   ME_GetSelection(editor, (int *)&selrange.cpMin, (int *)&selrange.cpMax);
   if(selrange.cpMin == selrange.cpMax)
     seltype |= SEL_EMPTY;
@@ -1099,6 +1099,7 @@ static void ME_ShowContextMenu(ME_TextEditor *editor, int x, int y)
     TrackPopupMenu(menu, TPM_LEFTALIGN | TPM_RIGHTBUTTON, x, y, 0, GetParent(editor->hWnd), NULL);
     DestroyMenu(menu);
   }
+  return TRUE;
 }
 
 ME_TextEditor *ME_MakeEditor(HWND hWnd) {
@@ -2335,7 +2336,8 @@ LRESULT WINAPI RichEditANSIWndProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lP
     ME_SelectWord(editor);
     break;
   case WM_CONTEXTMENU:
-    ME_ShowContextMenu(editor, (short)LOWORD(lParam), (short)HIWORD(lParam));
+    if (!ME_ShowContextMenu(editor, (short)LOWORD(lParam), (short)HIWORD(lParam)))
+      goto do_default;
     break;
   case WM_PAINT:
     if (editor->bRedraw)