Fix compilation due to missing flag

Reviewed By: mhorowitz

Differential Revision: D5053975

fbshipit-source-id: cfb5e71d7c9c318fa1942ce9d4dc72b4f7c1e054

ReactCommon/cxxreact/tests/BUCK

@@ -11,7 +11,6 @@ TEST_SRCS = [
 if THIS_IS_FBANDROID:
   include_defs('//ReactAndroid/DEFS')
   include_defs('//ReactAndroid/TEST_DEFS')
-
   jni_instrumentation_test_lib(
     name = 'tests',
     class_under_test = 'com/facebook/react/XplatBridgeTest',
@@ -19,7 +18,8 @@ if THIS_IS_FBANDROID:
     srcs = TEST_SRCS,
     compiler_flags = [
       '-fexceptions',
-      '-std=c++1y',
+      '-frtti',
+      '-std=c++14',
     ],
     deps = [
       '//native/third-party/android-ndk:android',
@@ -35,6 +35,7 @@ if THIS_IS_FBOBJC:
     srcs = TEST_SRCS,
     compiler_flags = [
       '-fexceptions',
+      '-frtti',
     ],
     deps = [
       '//xplat/folly:molly',