Report viewer when there is no protocol

[thomas-vincent]

With a fresh brainstorm installation and nothing in the DB, calling the Report Viewer leads to the following error:

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** Error: Line 1062: Struct contents reference from a non-struct array object. ** ** Call stack: ** >bst_report.m>GetReport at 1062 ** >bst_report.m>Open at 630 ** >bst_report.m at 58 ** >bst_call.m at 28 ** >gui_brainstorm.m>@(h,ev)bst_call(@bst_report,'Open','current') at 124 **

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After that a first protocol is created, it works.