Handle invalid values of PLT entry size generated by linker
Handle invalid values of PLT entry size generated by linker

Make sure we figure out correct plt entry field in case linker has generated a small value below realistic entry size like 4 bytes or below.

Differential revision: http://reviews.llvm.org/D19252



git-svn-id: 4c4cc70b1ef44ba2b7963015e681894188cea27e@267405 91177308-0d34-0410-b5e6-96231b3b80d8

apple/swift-lldb,apple/swift-lldb,llvm-mirror/lldb,llvm-mirror/lldb,apple/swift-lldb,llvm-mirror/lldb,llvm-mirror/lldb,apple/swift-lldb,apple/swift-lldb,llvm-mirror/lldb,apple/swift-lldb