Warn, don't assert, about unexpected inotify events.

In practice we seem to be getting some unexpected inotify() events during
heavy IO activity. This shouldn't happen but it does, so at least don't
prevent the program from running by popping up the assertion dialog when it
happens.

Closes #14854.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@73100 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/unix/fswatcher_inotify.cpp

@@ -250,11 +250,26 @@ protected:
                 }
                 else
                 {
-                    wxFAIL_MSG("Event for unknown watch descriptor.");
+                    // In theory we shouldn't reach here. In practice, some
+                    // events, e.g. IN_MODIFY, arrive just after the IN_IGNORED
+                    // so their wd has already been discarded. Warn about them.
+                    wxFileSystemWatcherEvent
+                        event
+                        (
+                            wxFSW_EVENT_WARNING,
+                            wxString::Format
+                            (
+                             _("Unexpected event for \"%s\": no "
+                               "matching watch descriptor."),
+                             inevt.len ? inevt.name : ""
+                            )
+                        );
+                    SendEvent(event);
+
                 }
 
                 // In any case, don't process this event: it's either for an
-                // already removed entry, or for a completely unknown one.
+                // already removed entry, or for an unknown one.
                 return;
             }
         }