flux-job: info: use original jobid in error message

Problem: The flux-job info subcommand always uses the decimal
encoding of the jobid in the error message when the job or key is
not found. This could be confusing to users.

Preserve and use the original jobid argument in any error message.

Author: grondo

src/cmd/flux-job.c

@@ -3283,6 +3283,7 @@ void info_usage (void)
 }
 
 struct info_ctx {
+    const char *id_arg;
     flux_jobid_t id;
     json_t *keys;
     bool original;
@@ -3295,7 +3296,7 @@ void info_output (flux_future_t *f, const char *suffix, struct info_ctx *ctx)
     if (flux_rpc_get_unpack (f, "{s:s}", suffix, &s) < 0) {
         if (errno == ENOENT) {
             flux_future_destroy (f);
-            log_msg_exit ("job %ju id or key not found", (uintmax_t)ctx->id);
+            log_msg_exit ("job %s id or key not found", ctx->id_arg);
         }
         else
             log_err_exit ("flux_rpc_get_unpack");
@@ -3340,6 +3341,7 @@ void info_lookup (flux_t *h,
     flux_future_t *f;
     struct info_ctx ctx = {0};
 
+    ctx.id_arg = argv[optindex-1];
     ctx.id = id;
     if (!(ctx.keys = json_array ()))
         log_msg_exit ("json_array");