Fix #undef directive for the REASON_FROM_NAME macro

Test: Build

Change-Id: I17361e11a903cfa9ef3afb74425dc3ab9b762104
diff --git a/libartbase/base/metrics/metrics.h b/libartbase/base/metrics/metrics.h
index d6f2463..701054e 100644
--- a/libartbase/base/metrics/metrics.h
+++ b/libartbase/base/metrics/metrics.h
@@ -129,7 +129,7 @@
 }
 
 #undef REASON_NAME
-#undef ReasonFromName
+#undef REASON_FROM_NAME
 
 #define COMPILER_FILTER_REPORTING_LIST(V) \
   V(kError, "error") /* Error (invalid value) condition */ \