Fixed the calculation of the size of data for OBI_STR and OBI_SEQ

columns

src/obitypes.c

@@ -40,8 +40,12 @@ size_t obi_sizeof(OBIType_t type)
 	case OBI_CHAR:  size = sizeof(obichar_t);
 					break;
 
-	case OBI_STR:   // fallthrough
-	case OBI_SEQ:   // fallthrough
+	case OBI_STR:	size = sizeof(index_t);
+					break;
+
+	case OBI_SEQ:	size = sizeof(index_t);
+					break;
+
 	case OBI_IDX:	size = sizeof(index_t);
 					break;