DEV: Remove ignore Ruff rule RET503

pypdf/_page.py

@@ -1248,6 +1248,7 @@ def _merge_page(
         self.replace_contents(ContentStream(new_content_array, self.pdf))
         self[NameObject(PG.RESOURCES)] = new_resources
         self[NameObject(PG.ANNOTS)] = new_annots
+        return
 
     def _merge_page_writer(
         self,

pypdf/_writer.py

@@ -2187,6 +2187,7 @@
 
             clean(content, images, forms)
             page.replace_contents(content)
+        return
 
     def remove_images(
         self,
@@ -3105,6 +3106,7 @@
                 o = cast(TreeObject, o["/Next"])
             else:
                 return None
+        return
 
     def find_bookmark(
         self,

pyproject.toml

@@ -175,7 +175,6 @@ ignore = [
     "PYI042",  # Type alias `mode_str_type` should be CamelCase
     "RET501",  # Do not explicitly `return None` in function if it is the only possible return value
     "RET502",  # Do not implicitly `return None` in function able to return non-`None` value
-    "RET503",  # Missing explicit `return` at the end of function able to return non-`None` value
     "RET505",  # Unnecessary `else` after `return` statement
     "RUF001",  # Detect confusable Unicode-to-Unicode units. Introduces bugs
     "RUF002",  # Detect confusable Unicode-to-Unicode units. Introduces bugs