chore: minor fmt match cleanup

Fix an overly complex case when w is 0. Note that this might have been an error - I kept the logic, but the initial implementation might have been incorrect.

src/uu/fmt/src/fmt.rs

@@ -110,9 +110,12 @@ impl FmtOptions {
                 }
                 (w, g)
             }
-            (Some(w), None) => {
+            (Some(0), None) => {
                 // Only allow a goal of zero if the width is set to be zero
-                let g = (w * DEFAULT_GOAL_TO_WIDTH_RATIO / 100).max(if w == 0 { 0 } else { 1 });
+                (0, 0)
+            }
+            (Some(w), None) => {
+                let g = (w * DEFAULT_GOAL_TO_WIDTH_RATIO / 100).max(1);
                 (w, g)
             }
             (None, Some(g)) => {