[AST] Handle getSuperclassForDecl() returning an ErrorType in more places#26750

nathawes merged 1 commit intoswiftlang:masterswiftlang/swift:masterfrom

nathawes:r54145042-code-completion-crash-differenceAndStoreConditionalRequirementsnathawes/swift:r54145042-code-completion-crash-differenceAndStoreConditionalRequirementsCopy head branch name to clipboard