added the same for proxy authorization header

lib/core/option.py

@@ -1070,6 +1070,7 @@ def __setKnowledgeBaseAttributes():
 
     kb.parenthesis     = None
     kb.partRun         = None
+    kb.proxyAuthHeader = None
     kb.lastRequestUID  = 0
     kb.queryCounter    = 0
     kb.resumedQueries  = {}

lib/core/target.py

@@ -296,6 +296,7 @@ def initTargetEnv():
         kb.injType        = None
         kb.nullConnection = None
         kb.parenthesis    = None
+        kb.proxyAuthHeader = None
         kb.unionComment   = ""
         kb.unionCount     = None
         kb.unionPosition  = None