fix build

ext/pdo/pdo_dbh.c

@@ -72,7 +72,7 @@ void pdo_raise_impl_error(pdo_dbh_t *dbh, pdo_stmt_t *stmt, const char *sqlstate
 	if (dbh->error_mode != PDO_ERRMODE_EXCEPTION) {
 		php_error_docref(NULL TSRMLS_CC, E_WARNING, "%s", message);
 	} else {
-		zval *ex, info;
+		zval *ex, *info;
 		zend_class_entry *def_ex = php_pdo_get_exception_base(1 TSRMLS_CC), *pdo_ex = php_pdo_get_exception(TSRMLS_C);
 
 		MAKE_STD_ZVAL(ex);

ext/pdo/php_pdo_driver.h

@@ -489,6 +489,13 @@ struct _pdo_dbh_t {
 	zend_class_entry *def_stmt_ce;
 	
 	zval *def_stmt_ctor_args;
+    
+	/* when calling PDO::query(), we need to keep the error
+	 * context from the statement around until we next clear it.
+	 * This will allow us to report the correct error message
+	 * when PDO::query() fails */
+	pdo_stmt_t *query_stmt;
+	zval query_stmt_zval;
 };
 
 /* describes a column */