Fix coverity 111962: initialize variable fd (ByteStreamStoragePlugins-00-01-04)

2017-01-19 Johannes Elmsheuser <Johannes.Elmsheuser@cern.ch>
	* Fix coverity 111962: initialize variable fd
	* Tagging as ByteStreamStoragePlugins-00-01-04

2016-10-25 Johannes Elmsheuser <Johannes.Elmsheuser@cern.ch>

Event/ByteStreamStoragePlugins/src/fReadDavix.cxx

@@ -34,6 +34,7 @@ fReadDavix::fReadDavix()
 {
   m_pfd = 0;
   fOffset = 0;
+  fd = nullptr;
 
   davixParam = new Davix::RequestParams();
   err = NULL;

Event/ByteStreamStoragePlugins/src/fReadDavix.h

@@ -26,14 +26,14 @@ class fReadDavix : public fRead
   fRead * newReader() const;
 
  private:
-  int  m_pfd; // current file
+  int  m_pfd; // current file, used as bool to check if file is open
   int64_t fOffset;
   Davix::Context c;
   Davix::RequestParams *davixParam;
   Davix::DavixError* err;
   Davix::DavPosix *pos;
   Davix::X509Credential *cert;
-  DAVIX_FD* fd; 
+  DAVIX_FD* fd; // davix pointer to current file
 
 };