Modifiers: add StructRNA pointer field to ModifierTypeInfo

This reduces the number of places that have to be modified
when a new modifier is added.

Reviewers: campbellbarton

Differential Revision: https://developer.blender.org/D9000

source/blender/modifiers/intern/MOD_datatransfer.c

@@ -470,6 +470,7 @@ ModifierTypeInfo modifierType_DataTransfer = {
     /* name */ "DataTransfer",
     /* structName */ "DataTransferModifierData",
     /* structSize */ sizeof(DataTransferModifierData),
+    /* srna */ &RNA_DataTransferModifier,
     /* type */ eModifierTypeType_NonGeometrical,
     /* flags */ eModifierTypeFlag_AcceptsMesh | eModifierTypeFlag_SupportsMapping |
         eModifierTypeFlag_SupportsEditmode | eModifierTypeFlag_UsesPreview,