Hi,
Per Coverity.
The function ReorderBufferTXNByXid,
can return NULL when the parameter *create* is false.
In the functions ReorderBufferSetBaseSnapshot
and ReorderBufferXidHasBaseSnapshot,
the second call to ReorderBufferTXNByXid,
pass false to *create* argument.
In the function ReorderBufferSetBaseSnapshot,
fixed passing true as argument to always return
a valid ReorderBufferTXN pointer.
In the function ReorderBufferXidHasBaseSnapshot,
fixed by checking if the pointer is NULL.
best regards,
Ranier Vilela
