make sure to save absmi registers before longjmp.

C/exec.c

@@ -1473,6 +1473,9 @@ JumpToEnv(Term t USES_REGS) {
   /* just keep the throwed object away, we don't need to care about it */
   if (!(LOCAL_BallTerm = Yap_StoreTermInDB(t, 0))) {
     /* fat chance */
+#if PUSH_REGS
+    restore_absmi_regs(&Yap_standard_regs);
+#endif
     siglongjmp(LOCAL_RestartEnv,1);
   }
   /* careful, previous step may have caused a stack shift,