Don't leak the Malt search menu into other node editors

Author: pragma37

BlenderMalt/MaltNodes/MaltNodeUITools.py

@@ -424,6 +424,8 @@ def invoke(self, context, event):
         return {'CANCELLED'}
 
 def draw_malt_add_search_menu(menu, context):
+    if context.area.ui_type != 'MaltTree':
+        return
     layout = menu.layout
     if is_malt_tree_context(context) == False:
         layout.label(text="No node tree selected", icon='ERROR')