Update DebugInfo test after LLVM change 41206b61e30

Update for 41206b61e30 ("[DebugInfo] Re-instate LiveDebugVariables
scope trimming", 2020-02-04).

Author: svenvh

test/DebugInfo/X86/live-debug-variables.ll

@@ -29,7 +29,7 @@
 ; CHECK:      .debug_loc contents:
 ; CHECK-NEXT: 0x00000000:
 ;   We currently emit an entry for the function prologue, too, which could be optimized away.
-; CHECK:              (0x0000000000000010, 0x0000000000000072): DW_OP_reg3 RBX
+; CHECK:              (0x0000000000000018, 0x0000000000000072): DW_OP_reg3 RBX
 ;   We should only have one entry inside the function.
 ; CHECK-NOT: :