Update processing to fix bug, infinite loop on said bug, and unused var

tools/fi.py

@@ -436,7 +436,7 @@ def xOpen(self, name, flags):
     class myvfsfile(apsw.VFSFile):
 
         def __init__(self, parent, filename, flags):
-            filename.parameters
+            hasattr(filename, "parameters") and filename.parameters
             super().__init__(parent, filename, flags)
 
     vfsinstance = myvfs()
@@ -694,8 +694,6 @@ def get_progress(self):
         return curline_pretty, 100 * pos / total_lines
 
     def verify_exception(self, tested):
-        if len(tested) == 0 and len(self.exc_happened) >= 0:
-            return
         ok = any(e[0] in self.expect_exception for e in self.exc_happened) or any(self.FAULTS in str(e[1])
                                                                                   for e in self.exc_happened)
         # these faults happen in fault handling so can't fault report themselves.
@@ -742,7 +740,6 @@ def run(self):
 
         self.last_key = None
         use_runplan = False
-        last = set(), set()
         complete = False
 
         sys.excepthook = sys.unraisablehook = self.exchook