Guarantee insert after drop

app/src/main/java/eu/faircode/email/EditTextMultiAutoComplete.java

@@ -603,6 +603,7 @@ public class EditTextMultiAutoComplete extends AppCompatMultiAutoCompleteTextVie
             if (this == state.source && target >= sourceStart && target <= sourceEnd)
                 return true;
 
+            try {
                 Editable source = state.source.getText();
                 source.removeSpan(state.span);
                 source.delete(sourceStart, sourceEnd);
@@ -615,13 +616,15 @@ public class EditTextMultiAutoComplete extends AppCompatMultiAutoCompleteTextVie
 
                 target = Math.max(0, Math.min(target, edit.length()));
                 target = resolveDropBoundary(edit, target, null);
-
+            } finally {
                 String text = state.text;
                 int insertLength = text.length();
                 int spanLength = state.end - state.start;
                 edit.insert(target, text);
                 edit.setSpan(state.span, target, target + spanLength, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
                 setSelection(target + insertLength);
+            }
+
             invalidate();
             post(update);