Fix a couple other leftover uses of 'conisonly' terminology.

src/backend/commands/typecmds.c

@@ -2939,7 +2939,7 @@ domainAddConstraint(Oid domainOid, Oid domainNamespace, Oid baseTypeOid,
 						  ccsrc,	/* Source form of check constraint */
 						  true, /* is local */
 						  0,	/* inhcount */
-						  false);		/* is only */
+						  false);		/* connoinherit */
 
 	/*
 	 * Return the compiled constraint expression so the calling routine can

src/include/catalog/pg_constraint.h

@@ -231,7 +231,7 @@ extern Oid CreateConstraintEntry(const char *constraintName,
 					  const char *conSrc,
 					  bool conIsLocal,
 					  int conInhCount,
-					  bool conIsOnly);
+					  bool conNoInherit);
 
 extern void RemoveConstraintById(Oid conId);
 extern void RenameConstraintById(Oid conId, const char *newname);