[513931] Fix Deadlock in StructureMergeViewer

Fixes a deadlock in the StructureMergeViewer. The deadlock is avoided by
the workbench, therefore the deadlock only occurs when the
"-allowDeadlock" flag is set or EMFCompare is run outside the workbench
(e.g. pure E4).

Bug: 513931
Signed-off-by: Alexandra Buzila <abuzila@eclipsesource.com>
Signed-off-by: Stefan Dirix <sdirix@eclipsesource.com>
Change-Id: I8bf8d3aa91d10f9341a626a0f978a8b1bb3e7a56
1 file changed