fix code style

Author: arusakov

src/compiler/checker.ts

@@ -21852,7 +21852,8 @@ namespace ts {
                 let diagnosticMessage: DiagnosticMessage | undefined;
                 if (languageVersion >= ScriptTarget.ES5) {
                     diagnosticMessage = Diagnostics.Octal_literals_are_not_available_when_targeting_ECMAScript_5_and_higher_Use_the_syntax_0;
-                } else if (isChildOfLiteralType(node)) {
+                }
+                else if (isChildOfLiteralType(node)) {
                     diagnosticMessage = Diagnostics.Octal_literal_types_must_use_ES2015_syntax_Use_the_syntax_0;
                 }
                 if (diagnosticMessage) {