ntdll: Make sure we don't return from a stub exception.

dlls/ntdll/exception.c

@@ -601,5 +601,5 @@ void __wine_spec_unimplemented_stub( const char *module, const char *function )
     record.NumberParameters = 2;
     record.ExceptionInformation[0] = (ULONG_PTR)module;
     record.ExceptionInformation[1] = (ULONG_PTR)function;
-    RtlRaiseException( &record );
+    for (;;) RtlRaiseException( &record );
 }

dlls/winecrt0/stub.c

@@ -32,5 +32,5 @@ void DECLSPEC_HIDDEN __wine_spec_unimplemented_stub( const char *module, const c
 
     args[0] = (ULONG_PTR)module;
     args[1] = (ULONG_PTR)function;
-    RaiseException( EXCEPTION_WINE_STUB, EXCEPTION_NONCONTINUABLE, 2, args );
+    for (;;) RaiseException( EXCEPTION_WINE_STUB, EXCEPTION_NONCONTINUABLE, 2, args );
 }