gcc 15.1 warnings - jsonb_util.c

Hi,

Compiling gcc 15.1 utters these protests (at least, with
--enable-cassert) that I don't think I saw with gcc 14:

jsonb_util.c: In function ‘compareJsonbContainers’:
jsonb_util.c:301:34: warning: ‘va.type’ may be used uninitialized
[-Wmaybe-uninitialized]
301 | res = (va.type > vb.type) ? 1 : -1;
| ~~^~~~~
jsonb_util.c:202:33: note: ‘va’ declared here
202 | JsonbValue va,
| ^~
jsonb_util.c:301:44: warning: ‘vb.type’ may be used uninitialized
[-Wmaybe-uninitialized]
301 | res = (va.type > vb.type) ? 1 : -1;
| ~~^~~~~
jsonb_util.c:203:41: note: ‘vb’ declared here
203 | vb;
| ^~

Thanks,

Erik