jpeg: Fix wrong JPEC codec GUID

Both FreeRDP and NeutrinoRDP CODEC_GUID_JPEG define:
    430C9EED-1BAF-4CE6-869ACB8B37B66237

However, for some reason, xrdp defines it as:
    1BAF4CE6-9EED-430C-869ACB8B37B66237

JPEG codec wasn't working at all due to this for years.

References:
* https://github.com/FreeRDP/FreeRDP/blob/843680e543db0608f5d6d1973ca1ecd3d7a0b817/libfreerdp/core/capabilities.c#L101-L105
* https://github.com/neutrinolabs/NeutrinoRDP/blob/50211223318a02db05b57196d03342edb0207c32/libfreerdp-core/capabilities.c#L65-L66

common/ms-rdpbcgr.h

@@ -388,9 +388,9 @@
 #define XR_CODEC_GUID_H264 \
     "\x48\x32\x36\x34\x00\x00\x10\x00\x80\x00\x00\xAA\x00\x38\x9B\x71"
 
-/* CODEC_GUID_JPEG     1BAF4CE6-9EED-430C-869ACB8B37B66237 */
+/* CODEC_GUID_JPEG     430C9EED-1BAF-4CE6-869ACB8B37B66237 */
 #define XR_CODEC_GUID_JPEG \
-    "\xE6\x4C\xAF\x1B\xED\x9E\x0C\x43\x86\x9A\xCB\x8B\x37\xB6\x62\x37"
+    "\xED\x9E\x0C\x43\xAF\x1B\xE6\x4C\x86\x9A\xCB\x8B\x37\xB6\x62\x37"
 
 /* CODEC_GUID_PNG      0E0C858D-28E0-45DB-ADAA0F83E57CC560 */
 #define XR_CODEC_GUID_PNG \