Fix size_t << debug prints

[schwehr]

Bug introduced in d271aaa

[schwehr]

Windows-2025, 20, x64 failing. Looks to be a preexisting problem

https://github.com/libgeos/geos/actions/runs/27716546991/job/81990830111?pr=1452

Total Test time (real) =  23.67 sec

The following tests FAILED:
	 62 - unit-capi-GEOSDifferencePrec (SEGFAULT)
	 98 - unit-capi-GEOSGeom_setPrecision (SEGFAULT)
	112 - unit-capi-GEOSIntersectionPrec (SEGFAULT)
	156 - unit-capi-GEOSSymDifferencePrec (SEGFAULT)
	269 - unit-noding-snapround-SnapRoundingNoder (SEGFAULT)
	272 - unit-operation-buffer-BufferOp (SEGFAULT)
	303 - unit-operation-overlayng-OverlayNGMixedPoints (SEGFAULT)
	308 - unit-operation-overlayng-OverlayNGStrictMode (SEGFAULT)
	309 - unit-operation-overlayng-OverlayNG (SEGFAULT)
	311 - unit-operation-overlayng-PrecisionReducer (SEGFAULT)
	314 - unit-operation-overlayng-UnaryUnionNG (SEGFAULT)
	339 - unit-precision-GeometryPrecisionReducer (SEGFAULT)
	359 - xml-general-TestBuffer (SEGFAULT)
	371 - xml-general-TestNGOverlayAPrec (SEGFAULT)
	375 - xml-general-TestNGOverlayLPrec (SEGFAULT)
	377 - xml-general-TestNGOverlayPPrec (SEGFAULT)
	379 - xml-general-TestOverlayAAPrec (SEGFAULT)
	382 - xml-general-TestOverlayLAPrec (SEGFAULT)
	384 - xml-general-TestOverlayLLPrec (SEGFAULT)
	421 - xml-issue-issue-geos-366 (SEGFAULT)
	433 - xml-issue-issue-geos-605 (SEGFAULT)
	444 - xml-misc-Segfaults (SEGFAULT)
	448 - xml-misc-buildarea (SEGFAULT)
	455 - xml-misc-makevalid (SEGFAULT)
	459 - xml-misc-safe-TestBufferJagged (SEGFAULT)
	465 - xml-robust-TestRobustOverlayFixed (SEGFAULT)
	505 - xml-robust-TestOverlay-misc-5 (SEGFAULT)
	517 - xml-robust-TestOverlay-stmlf (SEGFAULT)
Errors while running CTest
Error: Process completed with exit code 1.

[schwehr]

I think this is good to submit