Icon-O-Matic: Fix crash when unassigning path

Fixes #19375

Change-Id: I624cd8ad78e8e429f0ca3b32df24fb46e7636620
Reviewed-on: https://review.haiku-os.org/c/haiku/+/10884
Haiku-Format: Haiku-format Bot <[email protected]>
Reviewed-by: nephele nephele <[email protected]>
Reviewed-by: waddlesplash <[email protected]>
Tested-by: Commit checker robot <[email protected]>

src/apps/icon-o-matic/gui/PathListView.cpp

@@ -897,7 +897,7 @@ PathListView::_UpdateMarks()
 {
 	int32 count = CountItems();
 	if (fCurrentShape != NULL) {
-		// enable display of marks and mark items whoes
+		// enable display of marks and mark items whose
 		// path is contained in fCurrentShape
 		for (int32 i = 0; i < count; i++) {
 			PathListItem* item = dynamic_cast<PathListItem*>(ItemAt(i));

src/apps/icon-o-matic/shape/commands/UnassignPathCommand.cpp

@@ -27,6 +27,7 @@ UnassignPathCommand::UnassignPathCommand(PathSourceShape* shape,
 	  fPath(path),
 	  fPathRemoved(false)
 {
+	fPath->AcquireReference();
 }
 
 // destructor