maint: Fix apply-format script to work with clang-format 18.x

See barisione/clang-format-hooks#35

Author: ptomato

tools/apply-format

@@ -305,8 +305,7 @@ else # Diff-only.
             -p1 \
             -style="$style" \
             -iregex='^.*\.(c|cpp|cxx|cc|h|m|mm|js|java)$' \
-            > "$patch_dest" \
-        || exit 1
+            > "$patch_dest"
 
     if [ "$apply_to_staged" = true ]; then
         if [ ! -s "$patch_dest" ]; then