Handle OpAbortKHR in spvOpcodeIsAbort (#6661)

source/opcode.cpp

diff --git a/source/opcode.cpp b/source/opcode.cpp
index 3d84bbc..43fcd5e 100644
--- a/source/opcode.cpp
+++ b/source/opcode.cpp
@@ -392,6 +392,7 @@
     case spv::Op::OpTerminateRayKHR:
     case spv::Op::OpIgnoreIntersectionKHR:
     case spv::Op::OpEmitMeshTasksEXT:
+    case spv::Op::OpAbortKHR:
       return true;
     default:
       return false;