coverity#1325052 Logically dead code

since

commit 984780243c
Author: Stephan Bergmann <sbergman@redhat.com>
Date:   Thu Sep 17 19:15:26 2015 +0200

    HEADER_FIELD_TEXT is the only used HeaderFieldType

    Change-Id: Ia4e5554e1aaed9e821bdea18b9b3acff001dd6e7

Change-Id: Id56790fd5c953d4d7f4a235c7d016c807ff37038

tools/source/inet/inetmime.cxx

@@ -2426,7 +2426,6 @@ OUString INetMIME::decodeHeaderFieldBody(const OString& rBody)
 
     /* bool bStartEncodedWord = true; */
     const sal_Char * pWSPBegin = pBegin;
-    sal_uInt32 nCommentLevel = 0;
 
     for (const sal_Char * p = pBegin; p != pEnd;)
     {
@@ -2704,8 +2703,6 @@ OUString INetMIME::decodeHeaderFieldBody(const OString& rBody)
                 break;
 
             case ')':
-                if (nCommentLevel > 0)
-                    --nCommentLevel;
                 /* bStartEncodedWord = false; */
                 break;