::basegfx::utils::createWaveline was invoked with incorrect
parameter, resulted in wavelines rendered along a 4-sided
rectangle instead of a line.

Change-Id: I30f52c95bdb4f804438b04559ba339ba95dee6e1
Reviewed-on: https://gerrit.libreoffice.org/62838
Tested-by: Jenkins
Reviewed-by: Mark Hung <marklh9@gmail.com>