Apply suggestions from code review

Co-authored-by: Andrew Murray <3112309+radarhere@users.noreply.github.com>

Author: hugovk

.github/compare-dist-sizes.py

@@ -60,8 +60,7 @@ def key_for(filename: str) -> str | None:
 
 def display_for(filename: str) -> str:
     """Strip the `pillow-{version}-` prefix for compact table display."""
-    m = WHEEL_RE.match(filename)
-    if m:
+    if m := WHEEL_RE.match(filename):
         build = f"{m['build']}-" if m["build"] else ""
         return f"{build}{m['python']}-{m['abi']}-{m['platform']}.whl"
     if SDIST_RE.match(filename):
@@ -103,9 +102,7 @@ def human(n: int | None) -> str:
 
 
 def pct_change(before: int | None, after: int | None) -> str:
-    if before is None or after is None:
-        return "n/a"
-    if before == 0:
+    if not before or after is None:
         return "n/a"
     delta = (after - before) / before * 100
     return f"{delta:+.2f}%"

.github/workflows/wheels.yml

@@ -265,7 +265,7 @@ jobs:
         with:
           persist-credentials: false
 
-      - uses: astral-sh/setup-uv@557e51de59eb14aaaba2ed9621916900a91d50c6 # v6.10.1
+      - uses: astral-sh/setup-uv@08807647e7069bb48b6ef5acd8ec9567f424441b # v8.1.0
         with:
           enable-cache: false