fix syntax:

Author: Vladimir Ershov

src/scheduler_executor.c

@@ -499,12 +499,12 @@ int executor_onrollback(MemoryContext mem, job_t *job, executor_error_t *ee)
 	{
 		if(r->error)
 		{
-			if(push_executor_error(ee, "onrollback error: %s", r->error)) < 0)
+			if(push_executor_error(ee, "onrollback error: %s", r->error) < 0)
 					return -14000;
 		}
 		else
 		{
-			if(push_executor_error(ee, "onrollback error: unknown: %d", r->retval)) < 0)
+			if(push_executor_error(ee, "onrollback error: unknown: %d", r->retval) < 0)
 				return -14000;
 		}
 		ABORT_SPI_SNAP();

src/scheduler_spi_utils.c

@@ -82,7 +82,7 @@ spi_response_t *__error_spi_resp(MemoryContext ctx, int ret, char *error)
 	r->rows = NULL;
 	r->ref = NULL;
 	r->error = _mcopy_string(ctx, error);
-	if(!(r->error) return NULL;
+	if(!(r->error)) return NULL;
 
 	return r;
 }