SystemError: error without error set

[M. Gronle]

This bug occurs in 32bit only:

Create a plot using:

[i,h ] = plot(dataObject([100,100]))

Then, close the dialog, and execute the following if-case:

if h:
    pass

[M. Gronle]

@itobiege : Please, verify this

[itobiege]

fixes issue #67. If a plot handle is safed in the variable h, the command 'if h:' returns True as long as the plot exists and False, if the plot is closed.

→ <<cset 39b8dbd80e64>>