Do not emit references in generated declaration files if the --noresolve flag was set. This fixes a crash in the compiler when generating declarations with /// reference and noResolve

tests/baselines/reference/declarationEmit_invalidReference.js

@@ -0,0 +1,11 @@
+//// [declarationEmit_invalidReference.ts]
+/// <reference path="invalid.ts" />
+var x = 0;
+
+//// [declarationEmit_invalidReference.js]
+/// <reference path="invalid.ts" />
+var x = 0;
+
+
+//// [declarationEmit_invalidReference.d.ts]
+declare var x: number;

tests/baselines/reference/declarationEmit_invalidReference.types

@@ -0,0 +1,5 @@
+=== tests/cases/compiler/declarationEmit_invalidReference.ts ===
+/// <reference path="invalid.ts" />
+var x = 0;
+>x : number
+