Cleanup: Use guarded allocator for data-block names returned from file reading

Direcly using the C library allocator functions is usually avoided in favor of
our guarded allocator. It's more useful when debugging.

source/blender/python/intern/bpy_library_load.c

@@ -44,6 +44,8 @@
 
 #include "BLO_readfile.h"
 
+#include "MEM_guardedalloc.h"
+
 #include "bpy_capi_utils.h"
 #include "bpy_library.h"
 
@@ -225,7 +227,7 @@ static PyObject *_bpy_names(BPy_Library *self, int blocktype)
       PyList_SET_ITEM(list, counter, PyUnicode_FromString((char *)l->link));
       counter++;
     }
-    BLI_linklist_free(names, free); /* free linklist *and* each node's data */
+    BLI_linklist_free(names, MEM_freeN); /* free linklist *and* each node's data */
   }
 
   return list;