fix the NPE in DocumentSymbolHandler when source/location is not avai…#851

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andxu wants to merge 2 commits intoeclipse-jdtls:masterfrom

andxu:andy_fix1

Commits on Nov 15, 2018

fix the NPE in DocumentSymbolHandler when source/location is not available.
andxu
committed

Commits on Nov 16, 2018

use name as the region of the symbol instead of using full region(which includes the comment)
andxu
committed