Actually use the hint provided from attrs

BUG: 22913409
Change-Id: Ib4ed59080d53bdee562dd0263e9ded959d4bedb2
diff --git a/design/src/android/support/design/widget/TextInputLayout.java b/design/src/android/support/design/widget/TextInputLayout.java
index a3d8dcd..2826344 100644
--- a/design/src/android/support/design/widget/TextInputLayout.java
+++ b/design/src/android/support/design/widget/TextInputLayout.java
@@ -95,7 +95,7 @@
 
         final TypedArray a = context.obtainStyledAttributes(attrs,
                 R.styleable.TextInputLayout, defStyleAttr, R.style.Widget_Design_TextInputLayout);
-        mHint = a.getText(R.styleable.TextInputLayout_android_hint);
+        setHint(a.getText(R.styleable.TextInputLayout_android_hint));
         mHintAnimationEnabled = a.getBoolean(
                 R.styleable.TextInputLayout_hintAnimationEnabled, true);