Fix changed reference in L8CommandTest

Change-Id: I7e4cfbc036c6113abf7b34dcec839d637ec0bac4
diff --git a/src/test/java/com/android/tools/r8/L8CommandTest.java b/src/test/java/com/android/tools/r8/L8CommandTest.java
index 96338d3..8bb9f30 100644
--- a/src/test/java/com/android/tools/r8/L8CommandTest.java
+++ b/src/test/java/com/android/tools/r8/L8CommandTest.java
@@ -164,7 +164,7 @@
         parse(
             diagnostics,
             "--desugared-lib",
-            ToolHelper.DESUGAR_LIB_JSON_FOR_TESTING.toString(),
+            ToolHelper.getDesugarLibJsonForTesting().toString(),
             "--pg-conf",
             pgconf.toString(),
             "--pg-map-output",