New comment by tornaria on void-packages repository

https://github.com/void-linux/void-packages/pull/35621#issuecomment-1039466772

Comment:
This patch seems to work:
```
--- a/src/xoj-preview-extractor/CMakeLists.txt	2022-02-13 16:30:45.000000000 -0300
+++ b/src/xoj-preview-extractor/CMakeLists.txt	2022-02-14 16:03:48.561654740 -0300
@@ -35,6 +35,7 @@
   ${librsvg_LDFLAGS}
   ${Glib_LDFLAGS}
   ${ZIP_LDFLAGS}
+  ${Backtrace_LIBRARIES}
   )
 
 target_include_directories (xournalpp-thumbnailer PRIVATE ${librsvg_INCLUDE_DIRS})
```

Also, the setting of `xournalpp_LDFLAGS` in the template is not needed anymore.