am 10cd9776: am 9c4390de: am 7bc982d5: am 1b7d532f: Fix IndexArrayOutOfBounds in Utils.insertStringWithStyle

* commit '10cd97767a6341510441b2b113816c4a48ca28ce':
  Fix IndexArrayOutOfBounds in Utils.insertStringWithStyle
diff --git a/src/com/android/mail/utils/Utils.java b/src/com/android/mail/utils/Utils.java
index 4d9b63f..47d9aac 100644
--- a/src/com/android/mail/utils/Utils.java
+++ b/src/com/android/mail/utils/Utils.java
@@ -1072,11 +1072,13 @@
             String entireString, String subString, int appearance) {
         final int index = entireString.indexOf(subString);
         final SpannableString descriptionText = new SpannableString(entireString);
-        descriptionText.setSpan(
-                new TextAppearanceSpan(context, appearance),
-                index,
-                index + subString.length(),
-                0);
+        if (index >= 0) {
+            descriptionText.setSpan(
+                    new TextAppearanceSpan(context, appearance),
+                    index,
+                    index + subString.length(),
+                    0);
+        }
         return descriptionText;
     }