Fix the AttributedLabel triggering the Undefined Behavior sanitizer (#719)
Fix the AttributedLabel triggering the Undefined Behavior sanitizer (#719)

The issue is that the code was creating a variable length array of size 0.

Addresses Google issue b/145611212
jverkoey/nimbus,jverkoey/nimbus,jverkoey/nimbus,jverkoey/nimbus,jverkoey/nimbus,jverkoey/nimbus,jverkoey/nimbus