[gnome-software] trivial: Fix a missing break in a case statement

[Richard Hughes <rhughes src gnome org>]

commit ebc03e52278d2052c598e57e133b65a7c9cd7a48
Author: Richard Hughes <richard hughsie com>
Date:   Wed Nov 9 09:36:13 2016 +0000

    trivial: Fix a missing break in a case statement
    
    Found using Coverity.

 src/gs-utils.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/src/gs-utils.c b/src/gs-utils.c
index ac9bbd2..4386c34 100644
--- a/src/gs-utils.c
+++ b/src/gs-utils.c
@@ -727,6 +727,7 @@ gs_utils_error_convert_json_glib (GError **perror)
        switch (error->code) {
        case JSON_PARSER_ERROR_UNKNOWN:
                error->code = GS_PLUGIN_ERROR_FAILED;
+               break;
        default:
                error->code = GS_PLUGIN_ERROR_INVALID_FORMAT;
                break;