in_winevtlog: Suppress warnings

Author: cosmo0920

plugins/in_winevtlog/in_winevtlog.c

@@ -177,7 +177,7 @@ static int in_winevtlog_init(struct flb_input_instance *in,
         flb_plg_error(in, "could not initialize event encoder");
         flb_free(ctx);
 
-        return NULL;
+        return -1;
     }
 
     /* Load the config map */

plugins/in_winevtlog/pack.c

@@ -34,7 +34,7 @@
 
 static int pack_nullstr(struct winevtlog_config *ctx)
 {
-    flb_log_event_encoder_append_body_cstring(ctx->log_encoder, "");
+    return flb_log_event_encoder_append_body_cstring(ctx->log_encoder, "");
 }
 
 static int pack_wstr(struct winevtlog_config *ctx, const wchar_t *wstr)
@@ -314,6 +314,8 @@ static int pack_sid(struct winevtlog_config *ctx, PSID sid, int extract_sid)
 
             _snprintf_s(formatted, result_len, _TRUNCATE, "%s\\%s", domain, account);
 
+            size = strlen(formatted);
+
             if (size > 0) {
                 flb_log_event_encoder_append_body_cstring(ctx->log_encoder, formatted);