gnucash maint: use (string-concatenate ...) instead of (apply string-append ...)

[Christopher Lam]

Updated	 via  https://github.com/Gnucash/gnucash/commit/56fa5949 (commit)
	from  https://github.com/Gnucash/gnucash/commit/7e4fcc7a (commit)



commit 56fa5949f9ef47a248c924b4d3b313dcf82e8754
Author: Christopher Lam <christopher.lck at gmail.com>
Date:   Mon May 2 09:10:21 2022 +0800

    use (string-concatenate ...) instead of (apply string-append ...)
    
    similarly to a48e656ee, string-concatenate is less vulnerable to stack
    overflow. this was confirmed by wingo some time back.



Summary of changes:
 gnucash/report/html-text.scm | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)