BUG#11607 Incorrect error code returned on deletion

Save error on first failure.
    
At end of execute, if the current error is 4350 (transaction already aborted), restore
the original error (if there was one).

ndb/src/ndbapi/NdbConnection.cpp

@@ -280,6 +280,7 @@ NdbConnection::execute(ExecType aTypeOfExec,
 		       AbortOption abortOption,
 		       int forceSend)
 {
+  NdbError savedError= theError;
   DBUG_ENTER("NdbConnection::execute");
   DBUG_PRINT("enter", ("aTypeOfExec: %d, abortOption: %d", 
 		       aTypeOfExec, abortOption));
@@ -309,7 +310,11 @@ NdbConnection::execute(ExecType aTypeOfExec,
         NdbBlob* tBlob = tPrepOp->theBlobList;
         while (tBlob != NULL) {
           if (tBlob->preExecute(tExecType, batch) == -1)
+	  {
             ret = -1;
+	    if(savedError.code==0)
+	      savedError= theError;
+	  }
           tBlob = tBlob->theNext;
         }
         if (batch) {
@@ -338,7 +343,11 @@ NdbConnection::execute(ExecType aTypeOfExec,
           NdbBlob* tBlob = tOp->theBlobList;
           while (tBlob != NULL) {
             if (tBlob->preCommit() == -1)
+	    {
 	      ret = -1;
+	      if(savedError.code==0)
+		savedError= theError;
+	    }
             tBlob = tBlob->theNext;
           }
         }
@@ -360,7 +369,12 @@ NdbConnection::execute(ExecType aTypeOfExec,
     }
 
     if (executeNoBlobs(tExecType, abortOption, forceSend) == -1)
+    {
       ret = -1;
+      if(savedError.code==0)
+	savedError= theError;
+    }
+
 #ifdef ndb_api_crash_on_complex_blob_abort
     assert(theFirstOpInList == NULL && theLastOpInList == NULL);
 #else
@@ -375,7 +389,11 @@ NdbConnection::execute(ExecType aTypeOfExec,
           while (tBlob != NULL) {
             // may add new operations if batch
             if (tBlob->postExecute(tExecType) == -1)
+	    {
               ret = -1;
+	      if(savedError.code==0)
+		savedError= theError;
+	    }
             tBlob = tBlob->theNext;
           }
         }
@@ -406,6 +424,10 @@ NdbConnection::execute(ExecType aTypeOfExec,
     ndbout << "completed ops: " << n << endl;
   }
 #endif
+
+  if(savedError.code!=0 && theError.code==4350) // Trans already aborted
+      theError= savedError;
+
   DBUG_RETURN(ret);
 }