Can be seen here:
https://build.opensuse.org/package/live_build_log/openSUSE:Factory:Staging:C:DVD/mozjs24/standard/x86_64

[  352s]
/home/abuild/rpmbuild/BUILD/mozjs-24.2.0/js/src/shell/jsoptparse.cpp:256:25:
error: ISO C++ forbids comparison between pointer and integer [-fpermissive]
[  352s]          if (value[0] == '\0')
[  352s]                          ^~~~
[  352s] make[2]: *** [../config/rules.mk:1140: jsoptparse.o] Error 1
[  352s] make[2]: *** Waiting for unfinished jobs....
[  358s] /home/abuild/rpmbuild/BUILD/mozjs-24.2.0/js/src/shell/js.cpp: In
function 'JSBool Evaluate(JSContext*, unsigned int, jsval*)':
[  358s] /home/abuild/rpmbuild/BUILD/mozjs-24.2.0/js/src/shell/js.cpp:1036:20:
warning: '*((void*)(& ancx)+32).js::AutoCompartment::origin_' may be used
uninitialized in this function [-Wmaybe-uninitialized]
[  358s]      AutoNewContext ancx;

Likely the patch is not too different from what was merged for mozjs17