pyCharm inspection fixes. Mostly variable refernce issues

eos/db/__init__.py

@@ -62,6 +62,8 @@ if saveddata_connectionstring is not None:
     saveddata_meta = MetaData()
     saveddata_meta.bind = saveddata_engine
     saveddata_session = sessionmaker(bind=saveddata_engine, autoflush=False, expire_on_commit=False)()
+else:
+    saveddata_meta = None
 
 # Lock controlling any changes introduced to session
 sd_lock = threading.Lock()

eos/db/saveddata/queries.py

@@ -68,6 +68,7 @@ if configVal is True:
             def checkAndReturn(*args, **kwargs):
                 useCache = kwargs.pop("useCache", True)
                 cacheKey = []
+                items = None
                 cacheKey.extend(args)
                 for keyword in keywords:
                     cacheKey.append(kwargs.get(keyword))