NFC: directly return when CommonExitBlock != Succ
NFC: directly return when CommonExitBlock != Succ

Subscribers: llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D68330

git-svn-id: 0ff597fd157e6f4fc38580e8d64ab130330d2411@373456 91177308-0d34-0410-b5e6-96231b3b80d8
(cherry picked from commit ec777bf96d07a9ff7585bd80d36a7df362248f25)

apple/swift-llvm,apple/swift-llvm,apple/swift-llvm,apple/swift-llvm,apple/swift-llvm,apple/swift-llvm,apple/swift-llvm,apple/swift-llvm