Format all tests.

tests/language_strong/null2_test.dart

Index: tests/language_strong/null2_test.dart
diff --git a/tests/language_strong/null2_test.dart b/tests/language_strong/null2_test.dart
index 16d3a8308bfd7a64bdd72347190390aa0a52fcce..3357043e3a339632ee00ca6d383aba8a6ce168cf 100644
--- a/tests/language_strong/null2_test.dart
+++ b/tests/language_strong/null2_test.dart
@@ -12,7 +12,9 @@ confuse(x) {
   try {
     if (new DateTime.now().millisecondsSinceEpoch == 42) x = 42;
     throw [x];
-  } on dynamic catch (e) { return e[0]; }
+  } on dynamic catch (e) {
+    return e[0];
+  }
   return 42;
 }