Improve error reporting in dc_queuecmd.

diff --git a/lib/uilib.c b/lib/uilib.c
index b235105..26429f8 100644 (file)
--- a/lib/uilib.c
+++ b/lib/uilib.c
@@ -212,8 +212,10 @@ static struct qcmd *makeqcmd(wchar_t *name)
            if((cmd->name != NULL) && !wcscmp(cmd->name, name))
                break;
        }
-       if(cmd == NULL)
+       if(cmd == NULL) {
+           errno = ENOSYS; /* Bleh */
            return(NULL);
+       }
     }
     new = smalloc(sizeof(*new));
     new->tag = tag++;
@@ -497,6 +499,7 @@ int dc_queuecmd(int (*callback)(struct dc_response *), void *data, ...)
                } else {
                    if(buf != NULL)
                        free(buf);
+                   errno = EINVAL;
                    return(-1);
                }
            } else {