Add another missing case for renamed files

Author: axdiamond

Diff for: src/info.rs

@@ -539,7 +539,7 @@ impl Info {
                 match prefix.trim() {
                     "D" => deleted += 1,
                     "A" | "AM" | "??" => added += 1,
-                    "M" | "MM" => modified += 1,
+                    "M" | "MM" | "R" => modified += 1,
                     _ => {}
                 }
             }