update asm code to working state

Author: Hpmason

src/arch/x86/mod.rs

@@ -44,12 +44,12 @@ mod tests {
       asm!(
         "
             xor eax, eax
-            je ret5
+            je 5f
             mov eax, 2
-            jmp done
-          ret5:
+            jmp 1f
+          5:
             mov eax, 5
-          done:
+          1:
             ret",
         options(noreturn)
       );
@@ -103,11 +103,11 @@ mod tests {
     unsafe extern "C" fn external_loop() -> i32 {
       asm!(
         "
-            loop dest
+            loop 1f
             nop
             nop
             nop
-            dest:",
+            1:",
         options(noreturn)
       );
     }