[x86/Linux] Add Portable PopSEHRecords as NYI (#8412)

Author: parjong

src/vm/i386/cgenx86.cpp

@@ -1595,6 +1595,7 @@ extern "C" VOID STDCALL StubRareDisableTHROWWorker(Thread *pThread)
     pThread->HandleThreadAbort();
 }
 
+#ifndef FEATURE_PAL
 // Note that this logic is copied below, in PopSEHRecords
 __declspec(naked)
 VOID __cdecl PopSEHRecords(LPVOID pTargetSP)
@@ -1616,6 +1617,7 @@ VOID __cdecl PopSEHRecords(LPVOID pTargetSP)
         retn
     }
 }
+#endif // FEATURE_PAL
 
 //////////////////////////////////////////////////////////////////////////////
 //

src/vm/i386/unixstubs.cpp

@@ -88,3 +88,8 @@ extern "C"
     {
     }
 };
+
+VOID __cdecl PopSEHRecords(LPVOID pTargetSP)
+{
+    PORTABILITY_ASSERT("Implement for PAL");
+}