libreoffice: fix soffice permissions

This lone file for some reason can have incorrect non-executable
permissions after build (it's a shell script). I have seen this
on ppc32, but not anywhere else, and I haven't been able to
figure out why. Fix it everywhere anyway.

[ci skip]

srcpkgs/libreoffice/template

@@ -515,6 +515,11 @@ do_configure() {
 do_build() {
 	make ${makejobs} ${make_build_args}
 	make ${makejobs} -C libreofficekit
+
+	# on some platforms (32-bit ppc at least), this single file has
+	# incorrect (non-executable) permissions, so fix it here
+	# only this file is affected and i have no idea why...
+	chmod 755 ${wrksrc}/instdir/program/soffice
 }
 
 do_install() {