gnucash master: Version-check some webkit properties.

[John Ralls]

Updated	 via  https://github.com/Gnucash/gnucash/commit/f80058bc (commit)
	from  https://github.com/Gnucash/gnucash/commit/b8fc9df8 (commit)



commit f80058bc275c30da592fa0d837e71a2811f6dfa9
Author: John Ralls <jralls at ceridwen.us>
Date:   Sun Jul 16 12:47:23 2017 -0700

    Version-check some webkit properties.
    
    Avoids error messages about undefined properties in tracefile.



Summary of changes:
 src/html/gnc-html-webkit2.c | 4 ++++
 1 file changed, 4 insertions(+)