Testing fixes for security improvement, thread safety, and memory management.

src/fenrirscreenreader/core/memoryManager.py

@@ -92,7 +92,7 @@ class memoryManager():
     def clearCurrentIndexList(self, name):
         if not self.listStorageValid(name):
             return False      
-        self.listStorage[name]['index'] = []
+        self.listStorage[name]['list'] = []
         self.listStorage[name]['index'] = -1
     def getCurrentIndex(self,name):
         if not self.listStorageValid(name):
@@ -103,7 +103,7 @@ class memoryManager():
         try:        
             return self.listStorage[name]['index']    
         except:
-            retrun -1
+            return -1
     def isIndexListEmpty(self, name):
         if not self.listStorageValid(name):
             return False