cpu.x86: c-to-factor needs to deal with the fact that vm-reg might have been clobbered

basis/cpu/x86/32/bootstrap.factor

@@ -76,6 +76,7 @@ IN: bootstrap.x86
     ! call the quotation
     EAX quot-xt-offset [+] CALL
     ! save ds, rs registers
+    jit-load-vm
     jit-save-context
 ] \ c-to-factor define-sub-primitive
 

basis/cpu/x86/64/bootstrap.factor

@@ -74,6 +74,7 @@ IN: bootstrap.x86
     ctx-reg context-callstack-bottom-offset [+] safe-reg MOV
     ! call the quotation
     arg1 quot-xt-offset [+] CALL
+    jit-load-vm
     jit-save-context
 ] \ c-to-factor define-sub-primitive