tree-optimization/124545 - fix pr124545-2.c on ilp32 targets

The uns_carry() helper used "unsigned int" (32-bit) as the narrow type
and "unsigned long" as the wide type.
Switch to __UINT32_TYPE__ / __UINT64_TYPE__ throughout so that the
narrow-vs-wide test is target-independent.

	PR tree-optimization/124545

gcc/testsuite/ChangeLog:

	* gcc.dg/pr124545-2.c: Use __UINT32_TYPE__ / __UINT64_TYPE__
	instead of unsigned int/long/long long so the runtime check
	works on ILP32 targets.

Reported-by: Torbjörn SVENSSON <torbjorn.svensson@foss.st.com>
Tested-by: Torbjörn SVENSSON <torbjorn.svensson@foss.st.com>
Signed-off-by: Philipp Tomsich <philipp.tomsich@vrull.eu>