chore(internal): avoid lint errors in pagination expressions

Author: stainless-app[bot]

src/finch/pagination.py

@@ -138,6 +138,8 @@ def next_page_info(self) -> Optional[PageInfo]:
         if self.paging is not None:  # pyright: ignore[reportUnnecessaryComparison]
             if self.paging.offset is not None:  # pyright: ignore[reportUnnecessaryComparison]
                 offset = self.paging.offset
+        if offset is None:
+            return None  # type: ignore[unreachable]
 
         length = len(self._get_page_items())
         current_count = offset + length
@@ -173,6 +175,8 @@ def next_page_info(self) -> Optional[PageInfo]:
         if self.paging is not None:  # pyright: ignore[reportUnnecessaryComparison]
             if self.paging.offset is not None:  # pyright: ignore[reportUnnecessaryComparison]
                 offset = self.paging.offset
+        if offset is None:
+            return None  # type: ignore[unreachable]
 
         length = len(self._get_page_items())
         current_count = offset + length
@@ -207,6 +211,8 @@ def next_page_info(self) -> Optional[PageInfo]:
         if self.paging is not None:  # pyright: ignore[reportUnnecessaryComparison]
             if self.paging.offset is not None:  # pyright: ignore[reportUnnecessaryComparison]
                 offset = self.paging.offset
+        if offset is None:
+            return None  # type: ignore[unreachable]
 
         length = len(self._get_page_items())
         current_count = offset + length
@@ -241,6 +247,8 @@ def next_page_info(self) -> Optional[PageInfo]:
         if self.paging is not None:  # pyright: ignore[reportUnnecessaryComparison]
             if self.paging.offset is not None:  # pyright: ignore[reportUnnecessaryComparison]
                 offset = self.paging.offset
+        if offset is None:
+            return None  # type: ignore[unreachable]
 
         length = len(self._get_page_items())
         current_count = offset + length