Merge "Improved error handling when font loading fails."

Author: Romain Guy

graphics/java/android/graphics/Typeface.java

@@ -143,6 +143,9 @@ public static Typeface createFromFile(String path) {
 
     // don't allow clients to call this directly
     private Typeface(int ni) {
+        if (ni == 0) {
+            throw new IllegalStateException();
+        }
         native_instance = ni;
     }