Fix NameError: name 'finish' is not defined in gardenlinux.apt.DebsrcFile

Signed-off-by: Tobias Wolf <wolf@b1-systems.de>

Author: NotTheEvilOne

src/gardenlinux/apt/debsource.py

@@ -99,8 +99,8 @@ def read(self, f: TextIO) -> None:
                 elif match["eso"]:
                     current_source = current_version = None
                 elif match["eoe"] is not None:
-                    finish()
                     current_source = current_version = None
+                    break
             else:
                 raise RuntimeError(f"Unable to read line: {line}")