json_load_file: Initialize the error struct properly

Failing to do this has the effect that the error message is not
returned when the input file cannot be opened (e.g. if it doesn't
exist).

Thanks to Martin Vopatek for reporting.

1 files changed, 2 insertions, 0 deletions

diff --git a/src/load.c b/src/load.c
index f004525..53241ff 100644
--- a/src/load.c
+++ b/src/load.c
@@ -864,6 +864,8 @@ json_t *json_load_file(const char *path, json_error_t *error)
     json_t *result;
     FILE *fp;
 
+    error_init(error);
+
     fp = fopen(path, "r");
     if(!fp)
     {