gssapi: correct incorrect case in error message
diff --git a/src/transports/auth_negotiate.c b/src/transports/auth_negotiate.c
index e924dc3..d06bf74 100644
--- a/src/transports/auth_negotiate.c
+++ b/src/transports/auth_negotiate.c
@@ -105,7 +105,7 @@ static int negotiate_next_token(
if (GSS_ERROR(status_major)) {
negotiate_err_set(status_major, status_minor,
- "Could not parse principal");
+ "could not parse principal");
error = -1;
goto done;
}