Make sure EmailContent is initialized before referencing provider URIs

b/10802719

Change-Id: I66fd491cfc1e0426aa306c5edce5b70286c5f8b2
diff --git a/src/com/android/exchange/provider/ExchangeDirectoryProvider.java b/src/com/android/exchange/provider/ExchangeDirectoryProvider.java
index 75740bd..2b94271 100644
--- a/src/com/android/exchange/provider/ExchangeDirectoryProvider.java
+++ b/src/com/android/exchange/provider/ExchangeDirectoryProvider.java
@@ -84,6 +84,7 @@
 
     @Override
     public boolean onCreate() {
+        EmailContent.init(getContext());
         return true;
     }