Revive the error message from "process load" and SBProcess::LoadImage.
Revive the error message from "process load" and SBProcess::LoadImage.

IsPointedCString has problems with ValueObjects of type eTypeHostAddress.  We should
figure out the right thing to do in that case, but the test is silly here because we're
reading a type we've defined, so we know it is a const char *, and if the memory is good, 
we won't be able to read any characters, when we do ReadPointedString.

<rdar://problem/26612812>


git-svn-id: 4c4cc70b1ef44ba2b7963015e681894188cea27e@272087 91177308-0d34-0410-b5e6-96231b3b80d8

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