Fix last test failure

Author: calda

lib/Sema/MiscDiagnostics.cpp

@@ -1520,13 +1520,20 @@ static void diagnoseImplicitSelfUseInClosure(const Expr *E,
       if (!ty->hasReferenceSemantics())
         return false;
 
-      // If this is a `AbstractFunctionDecl` (`FuncDecl`, `ConstructorDecl`, or `DestructorDecl`.
-      // `@autoclosure @escaping () -> String = String()` as one example),
-      // then the capture is fine.
+      // If this is an implicit self parameter to a `AbstractFunctionDecl`
+      // (`FuncDecl`, `ConstructorDecl`, or `DestructorDecl`,
+      //  `@autoclosure @escaping () -> String = String()` as one example)
+      // then it isn't actually capturing the closure's 'self', and is fine.
       if (isa<AbstractFunctionDecl>(DRE->getDecl())) {
         return false;
       }
 
+      // If this decl isn't named "self", then it isn't an implicit self capture
+      // and we have no reason to reject it.
+      if (!DRE->getDecl()->getBaseName().getIdentifier().is("self")) {
+        return false;
+      }
+      
       auto isExplicitWeakSelfCapture = false;
       if (auto closureExpr = dyn_cast<ClosureExpr>(inClosure)) {
         if (auto selfDecl = closureExpr->getCapturedSelfDecl()) {