[sledge] Update operand index of Invoke callee
[sledge] Update operand index of Invoke callee

Summary: It seems to have changed in llvm.

Reviewed By: jvillard

Differential Revision: D27280737

fbshipit-source-id: 818869ede

jvillard/infer,jvillard/infer,facebook/infer,jvillard/infer,facebook/infer,facebook/infer,jvillard/infer,facebook/infer,jvillard/infer,facebook/infer,jvillard/infer,jvillard/infer,facebook/infer,facebook/infer