Another oversight - make sure constants related to pg_result_error_field are #if'd as well as the function itself

ext/pgsql/pgsql.c

@@ -483,6 +483,7 @@ PHP_MINIT_FUNCTION(pgsql)
 	REGISTER_LONG_CONSTANT("PGSQL_BAD_RESPONSE", PGRES_BAD_RESPONSE, CONST_CS | CONST_PERSISTENT);
 	REGISTER_LONG_CONSTANT("PGSQL_NONFATAL_ERROR", PGRES_NONFATAL_ERROR, CONST_CS | CONST_PERSISTENT);
 	REGISTER_LONG_CONSTANT("PGSQL_FATAL_ERROR", PGRES_FATAL_ERROR, CONST_CS | CONST_PERSISTENT);
+#if HAVE_PQRESULTERRORFIELD
 	/* For pg_result_error_field() field codes */
 	REGISTER_LONG_CONSTANT("PGSQL_DIAG_SEVERITY", PG_DIAG_SEVERITY, CONST_CS | CONST_PERSISTENT);
 	REGISTER_LONG_CONSTANT("PGSQL_DIAG_SQLSTATE", PG_DIAG_SQLSTATE, CONST_CS | CONST_PERSISTENT);
@@ -496,6 +497,7 @@ PHP_MINIT_FUNCTION(pgsql)
 	REGISTER_LONG_CONSTANT("PGSQL_DIAG_SOURCE_FILE", PG_DIAG_SOURCE_FILE, CONST_CS | CONST_PERSISTENT);
 	REGISTER_LONG_CONSTANT("PGSQL_DIAG_SOURCE_LINE", PG_DIAG_SOURCE_LINE, CONST_CS | CONST_PERSISTENT);
 	REGISTER_LONG_CONSTANT("PGSQL_DIAG_SOURCE_FUNCTION", PG_DIAG_SOURCE_FUNCTION, CONST_CS | CONST_PERSISTENT);
+#endif
 	/* pg_convert options */
 	REGISTER_LONG_CONSTANT("PGSQL_CONV_IGNORE_DEFAULT", PGSQL_CONV_IGNORE_DEFAULT, CONST_CS | CONST_PERSISTENT);
 	REGISTER_LONG_CONSTANT("PGSQL_CONV_FORCE_NULL", PGSQL_CONV_FORCE_NULL, CONST_CS | CONST_PERSISTENT);