fix: null byte account guess (#81)

attempt to ensure that a '(null)' byte does not overthrow the account
testing.

snakemake_executor_plugin_slurm/__init__.py

@@ -419,6 +419,7 @@ def get_account_arg(self, job: JobExecutorInterface):
                 account = self.get_account()
                 if account:
                     self.logger.warning(f"Guessed SLURM account: {account}")
+                    self.test_account(f"{account}")
                     self._fallback_account_arg = f" -A {account}"
                 else:
                     self.logger.warning(
@@ -456,7 +457,7 @@ def get_account(self):
             sacct_out = subprocess.check_output(
                 cmd, shell=True, text=True, stderr=subprocess.PIPE
             )
-            return sacct_out.strip()
+            return sacct_out.replace("(null)", "").strip()
         except subprocess.CalledProcessError as e:
             self.logger.warning(
                 f"No account was given, not able to get a SLURM account via sacct: "