loader: update to reflect latest 18.0.0 changes

well, this sure is late, whoops

libraries/libvapours/include/vapours/results/loader_results.hpp

@@ -34,6 +34,8 @@ namespace ams::ldr {
     R_DEFINE_ERROR_RESULT(InvalidAcidSignature,  11);
     R_DEFINE_ERROR_RESULT(InvalidNcaSignature,   12);
 
+    R_DEFINE_ERROR_RESULT(InvalidPlatformId,     14);
+
     R_DEFINE_ERROR_RESULT(OutOfAddressSpace,            51);
     R_DEFINE_ERROR_RESULT(InvalidNroImage,              52);
     R_DEFINE_ERROR_RESULT(InvalidNrrImage,              53);