Fix a serious bug that prevented the script from working on new systems. Probably introduced by the previous commit

furaffinity-dl

@@ -16,10 +16,11 @@ You can also log in to FurAffinity and download restricted content, like this:
 fi
 
 runtime_dir="$HOME"'/.cache/furaffinity-dl'
+mkdir -p "$runtime_dir"
 tempfile="$(umask u=rwx,g=,o= && mktemp --tmpdir=$runtime_dir)"
 
 cleanup() {
-    rm -f "$tempfile"
+    rm -f "$runtime_dir"
 }
 trap cleanup EXIT