Don't use enums for scoped search

Don't use enums for scoped search

Even though enums contain members, their members are accessed in a
different way than members of classes and structs. E.g. consider:

typedef enum {A, B, C, D} MyEnum;

Variable of this type is declared as

MyEnum myVar;

myVar can be assigned a value from MyEnum; however, we don't access myVar
over the dot operator so we don't need the list of all members after
typing

myVar.

This patch eliminates some false positives after typing .