Fix a `-Wshift-sign-overflow` warning
The following Merge Request (MR) has been forwarded from GitHub in order to prevent the GNOME Project from losing contributions coming from un-official channels. And for contributors to not see their valuable contributions not being accounted for.
Relevant information:
Github handle: r-barnes
MR URL: https://github.com/GNOME/json-glib/pull/3
Patch URL: https://github.com/GNOME/json-glib/pull/3.patch
Body of the MR:
Fixes a -Wshift-sign-overflow
warning