pgsql: Use correct datatype for xmin variables in slot.c

Use correct datatype for xmin variables in slot.c Two variables storing a slot's effective_xmin and effective_catalog_xmin were saved as XLogRecPtr, which is incorrect as these should be TransactionIds. Oversight in 818fefd8fd44. Author: Bharath Rupireddy Discussion:

pgsql: Use correct datatype for xmin variables in slot.c

Use correct datatype for xmin variables in slot.c Two variables storing a slot's effective_xmin and effective_catalog_xmin were saved as XLogRecPtr, which is incorrect as these should be TransactionIds. Oversight in 818fefd8fd44. Author: Bharath Rupireddy Discussion: