Correction + move of code to NDB_DEBUG_FULL from VM_TRACE

ndb/include/transporter/TransporterDefinitions.hpp:
  Correction for bad math
ndb/src/kernel/blocks/dbacc/DbaccMain.cpp:
  Moved heavy check code to NDB_DEBUG_FULL

ndb/include/transporter/TransporterDefinitions.hpp

@@ -132,7 +132,7 @@ struct SignalHeader {
   Uint16 theTrace;
   Uint8  m_noOfSections;
   Uint8  m_fragmentInfo;
-}; /** 7x4 = 32 Bytes */
+}; /** 7x4 = 28 Bytes */
 
 struct LinearSectionPtr {
   Uint32 sz;

ndb/src/kernel/blocks/dbacc/DbaccMain.cpp

@@ -12493,7 +12493,7 @@ void Dbacc::releaseLcpConnectRec(Signal* signal)
 /* --------------------------------------------------------------------------------- */
 void Dbacc::releaseOpRec(Signal* signal) 
 {
-#ifdef VM_TRACE
+#ifdef NDB_DEBUG_FULL
   // DEBUG CODE
   // Check that the operation to be released isn't 
   // already in the list of free operations