CLSA-2024-1721206783 freerdp: Fix of 12 CVEs

CVE-2023-39352: add bound check in gdiSolidFill - CVE-2023-39353: check indices are within range - CVE-2023-39356: fix checks for multi opaque rect - CVE-2023-40181: fix cBitsRemaining calculation - CVE-2023-40186: fix integer multiplications - CVE-2023-40188: fix input length validation -...