Bug 537415 Fix npe in ContentAssistant.show

Signed-off-by: Christian Dietrich <christian.dietrich@itemis.de>
Change-Id: I036cd02358c48e7e94871d4397cfacecbda63e5f
Reviewed-on: https://git.eclipse.org/r/c/platform/eclipse.platform.text/+/183111
Tested-by: Platform Bot <platform-bot@eclipse.org>
Reviewed-by: Andrey Loskutov <loskutov@gmx.de>
1 file changed