The inclusion of new references of ZSAV files, is omitted one of the backslash "\". In this commit fix the problem.
src/ui/gui/icons/mimetypes/256x256/application-x-spss-por.png \
src/ui/gui/icons/mimetypes/256x256/application-x-spss-sav.png \
src/ui/gui/icons/mimetypes/256x256/application-x-spss-sps.png \
-src/ui/gui/icons/mimetypes/256x256/application-x-spss-zsav.png
+src/ui/gui/icons/mimetypes/256x256/application-x-spss-zsav.png \
src/ui/gui/icons/mimetypes/16x16/application-x-spss-por.png \
src/ui/gui/icons/mimetypes/16x16/application-x-spss-sav.png \
src/ui/gui/icons/mimetypes/16x16/application-x-spss-sps.png \