Handle error return from SetPath

storage/connect/tabjson.cpp

@@ -120,7 +120,9 @@ PQRYRES JSONColumns(PGLOBAL g, char *db, char *dsn, PTOS topt, bool info)
 		return NULL;
 	} // endif Fn
 
-  tdp->Database = SetPath(g, db);
+	if (!(tdp->Database = SetPath(g, db)))
+		return NULL;
+
   tdp->Objname = GetStringTableOption(g, topt, "Object", NULL);
   tdp->Base = GetIntegerTableOption(g, topt, "Base", 0) ? 1 : 0;
   tdp->Pretty = GetIntegerTableOption(g, topt, "Pretty", 2);

storage/connect/tabxml.cpp

@@ -157,7 +157,10 @@ PQRYRES XMLColumns(PGLOBAL g, char *db, char *tab, PTOS topt, bool info)
 
   tdp = new(g) XMLDEF;
   tdp->Fn = fn;
-  tdp->Database = SetPath(g, db);
+
+	if (!(tdp->Database = SetPath(g, db)))
+		return NULL;
+
   tdp->Tabname = tab;
 	tdp->Zipped = GetBooleanTableOption(g, topt, "Zipped", false);
 	tdp->Entry = GetStringTableOption(g, topt, "Entry", NULL);