Log Message:-----------Add some missing HeapTupleIsValid() controls for cache lookups.
Modified Files:-------------- plscheme: plscheme.c (r1.13 -> r1.14) (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/plscheme/plscheme/plscheme.c.diff?r1=1.13&r2=1.14)
