swift234

[SourceKit] Add test case for crash triggered in swift::Type::transform(std::function<swift::Type (swift::Type)> const&) const

Stack trace:

```
found code completion token A at offset 169
6  swift-ide-test  0x0000000000b95d9c swift::Type::transform(std::function<swift::Type (swift::Type)> const&) const + 44
7  swift-ide-test  0x0000000000b97bde swift::TypeBase::getTypeOfMember(swift::ModuleDecl*, swift::Type, swift::DeclContext*) + 174
8  swift-ide-test  0x0000000000985c4b swift::TypeChecker::resolveTypeInContext(swift::TypeDecl*, swift::DeclContext*, swift::OptionSet<swift::TypeResolutionFlags, unsigned int>, bool, swift::GenericTypeResolver*, llvm::function_ref<bool (swift::TypeCheckRequest)>*) + 1435
12 swift-ide-test  0x000000000098651e swift::TypeChecker::resolveIdentifierType(swift::DeclContext*, swift::IdentTypeRepr*, swift::OptionSet<swift::TypeResolutionFlags, unsigned int>, bool, swift::GenericTypeResolver*, llvm::function_ref<bool (swift::TypeCheckRequest)>*) + 158
14 swift-ide-test  0x0000000000986414 swift::TypeChecker::validateType(swift::TypeLoc&, swift::DeclContext*, swift::OptionSet<swift::TypeResolutionFlags, unsigned int>, swift::GenericTypeResolver*, llvm::function_ref<bool (swift::TypeCheckRequest)>*) + 212
19 swift-ide-test  0x0000000000938707 swift::TypeChecker::typeCheckDecl(swift::Decl*, bool) + 151
22 swift-ide-test  0x00000000009808db swift::TypeChecker::typeCheckFunctionBodyUntil(swift::FuncDecl*, swift::SourceLoc) + 379
23 swift-ide-test  0x000000000098071e swift::TypeChecker::typeCheckAbstractFunctionBodyUntil(swift::AbstractFunctionDecl*, swift::SourceLoc) + 46
24 swift-ide-test  0x0000000000908bd8 swift::typeCheckAbstractFunctionBodyUntil(swift::AbstractFunctionDecl*, swift::SourceLoc) + 1128
33 swift-ide-test  0x0000000000ae6734 swift::Decl::walk(swift::ASTWalker&) + 20
34 swift-ide-test  0x0000000000b6fbce swift::SourceFile::walk(swift::ASTWalker&) + 174
35 swift-ide-test  0x0000000000b6efaf swift::ModuleDecl::walk(swift::ASTWalker&) + 79
36 swift-ide-test  0x0000000000b49722 swift::DeclContext::walkContext(swift::ASTWalker&) + 146
37 swift-ide-test  0x000000000086599d swift::performDelayedParsing(swift::DeclContext*, swift::PersistentParserState&, swift::CodeCompletionCallbacksFactory*) + 61
38 swift-ide-test  0x0000000000774304 swift::CompilerInstance::performSema() + 3316
39 swift-ide-test  0x000000000071cc33 main + 35011
Stack dump:
0.	Program arguments: swift-ide-test -code-completion -code-completion-token=A -source-filename=<INPUT-FILE>
1.	While walking into decl 'A' at <INPUT-FILE>:2:1
2.	While type-checking 'A' at <INPUT-FILE>:5:1
3.	While resolving type e at [<INPUT-FILE>:5:24 - line:5:24] RangeText="e"
```