Update neofetch

Separating calculations as shown in https://github.com/dylanaraps/neofetch/pull/2225#issuecomment-1296882170

neofetch

@@ -2811,17 +2811,20 @@ get_memory() {
         tib)
             mem_label=TiB
             memory_unit_divider=$((1024 * 1024))
-            printf -v mem_used "%'.*f" \
-                        "${mem_precision}" \
-                        $((mem_used / memory_unit_divider)).$((mem_used % memory_unit_divider))
-            printf -v mem_total "%'.*f" \
-                        "${mem_precision}" \
-                        $((mem_total / memory_unit_divider)).$((mem_total % memory_unit_divider))
         ;;
 
         gib)
             mem_label=GiB
             memory_unit_divider=1024
+        ;;
+
+        kib)
+            mem_label=KiB
+        ;;
+    esac
+
+    case $mem_label in
+        GiB|TiB)
             printf -v mem_used "%'.*f" \
                         "${mem_precision}" \
                         $((mem_used / memory_unit_divider)).$((mem_used % memory_unit_divider))
@@ -2830,11 +2833,10 @@ get_memory() {
                         $((mem_total / memory_unit_divider)).$((mem_total % memory_unit_divider))
         ;;
 
-        kib)
+        KiB)
             mem_used=$((mem_used * 1024))
             mem_total=$((mem_total * 1024))
-            mem_label=KiB
-        ;;
+	;;
     esac
 
     memory="${mem_used}${mem_label:-MiB} / ${mem_total}${mem_label:-MiB} ${mem_perc:+(${mem_perc}%)}"