[Pharo-project] Clipboard Problem on Mac build 10424

On #10424 my image became confused with clipboard problems. Somehow, MacOSClipboard.clipboard became false when it appears that the correct value is zero (0). When attempting to fix this I found that ExternalClipboard>>#'initialize' contains the following line, which probably causes the problem: clipboard := [self createClipboard] on: Error do: [:ex | clipboard = 0] I suspect that the correct code should be: clipboard := [self createClipboard] on: Error do: [:ex | clipboard := 0] or clipboard := [self createClipboard] on: Error do: [:ex | 0]