Use StringBuilder in XMLWriter

Done with JDT UI cleanup action.

Change-Id: I3b3a3c01105987fb4b80a452d2d0cb95597cd0c6
Signed-off-by: Lars Vogel <Lars.Vogel@vogella.com>
Reviewed-on: https://git.eclipse.org/r/c/equinox/rt.equinox.p2/+/183163
Tested-by: Equinox Bot <equinox-bot@eclipse.org>
Reviewed-by: Alexander Kurtakov <akurtako@redhat.com>
1 file changed